Highways speed limit in Germany would reduce CO2 emissions by 2M tonnes(twitter.com)
twitter.com
Highways speed limit in Germany would reduce CO2 emissions by 2M tonnes
https://twitter.com/giulio_mattioli/status/1410171897065660417
142 comments
What efficiencies are gained by having Germans fly down the autobahn? Isn't at least possible that whatever CO2 is added is outweighed by the increase in growth?
I thought that why some Autobahn is still unlimited is to encourage Germany car manufacturer to develop high performance (or say premium) car.
Germany will introduce a highway speed limit when the US will adopt metric units.
I'm shocked that a speed limit of 130km/h would have that much of an impact. I very rarely see cars operating beyond 130, usually only for occasional passing. Normal speed is closer to 110.
> Normal speed is closer to 110.
Average, you might be right. Many people definitely drive a lot faster (I guess that's where the sibling comments "do you drive in germany" come from), but then they get stuck behind an overtaking truck etc., and then there are people driving slower so the average speed across all lanes might very well be 110 at busy times (and of course you're most likely to drive when it's busy, so that's what you'd observe).
The problem (emissions) might be from accelerating up to 150, then back down because someone driving 120 is overtaking someone else, the person behind you also has to brake, and repeat.
Average, you might be right. Many people definitely drive a lot faster (I guess that's where the sibling comments "do you drive in germany" come from), but then they get stuck behind an overtaking truck etc., and then there are people driving slower so the average speed across all lanes might very well be 110 at busy times (and of course you're most likely to drive when it's busy, so that's what you'd observe).
The problem (emissions) might be from accelerating up to 150, then back down because someone driving 120 is overtaking someone else, the person behind you also has to brake, and repeat.
Do you drive in Germany?
In Germany everyone drives above 130km/h (~80mph) on the sections of the Autobahn that do not have speed limits.
When I was 18 I always floored my crappy very old Ford Fiesta going around 158 km/h (on a good day, downhill and probably with a tailwind haha). Driving my family's nicer cars I frequently drove 200+ km/h. When there is a good amount of traffic I would see a more realistic average speed of 160 km/h.
When I was 18 I always floored my crappy very old Ford Fiesta going around 158 km/h (on a good day, downhill and probably with a tailwind haha). Driving my family's nicer cars I frequently drove 200+ km/h. When there is a good amount of traffic I would see a more realistic average speed of 160 km/h.
Yes, west of stuttgart for the most part on 8. Maybe it's different elsewhere.
It much depends on the traffic volume. On 3 lane segments, the speed often is higher, but in the typical commuter traffic it is quite slow.
If you're driving below 150km/h on the middle or left lane in Germany, you're actively putting yourself in danger.
No, you are not. You shouldn't suddenly move to a lane left of you without checking that there is no faster traffic oncoming though. And you might move right, if possible. But it is not a special danger.
I'm not sure why you are getting downvoted, this is absolutely true on even just a semi-active Autobahn.
Feels like people are actively out for you at that point, you'll have close-calls and will get nearly rear-ended by some Audi that wants to switch lanes where it shouldn't in no time.
Feels like people are actively out for you at that point, you'll have close-calls and will get nearly rear-ended by some Audi that wants to switch lanes where it shouldn't in no time.
Maybe in the US, but that’s not the case in most places in Europe.
It isn't true in the US either. A large region of the country has 130 km/h limits, and those limits are only loosely enforced. I've lived in regions of the US where 140 km/h is the typical highway driving speed.
Experience can vary widely depending where on the continent one lives. Some states do have low speed limits.
Experience can vary widely depending where on the continent one lives. Some states do have low speed limits.
Hmm, we had 55mph imposed due to the 70s oil crisis.
Wonder if we'll see an appetite for re-introducing it. I doubt it though. It's not the 70s anymore. Cars are safer and people are less likely to obey such things nowadays. I mean, most people go over 65 on highways.
Wonder if we'll see an appetite for re-introducing it. I doubt it though. It's not the 70s anymore. Cars are safer and people are less likely to obey such things nowadays. I mean, most people go over 65 on highways.
For God's sake, please make it 60 mph this time so I can do the mental math.
Not going to happen. Adding an hour to every road trip is not going to be popular with many.
My first thought was, "Is 2 million tons of CO2 a lot?"
According to Wikipedia, "Human activities emit over 30 billion tons of CO2 per year..."[1], so that's 0.007% of yearly CO2 emissions. Germany alone emits 700 million tons of CO2 per year, so that would be 0.3% of their share.[2]
It seems like increasing adoption of electric vehicles would do a lot more to solve this problem. Ground transportation is responsible for 161 million tons per year in Germany (23% of their emissions).
1. https://en.wikipedia.org/wiki/Carbon_dioxide#In_Earth's_atmo...
2. https://ourworldindata.org/co2/country/germany
According to Wikipedia, "Human activities emit over 30 billion tons of CO2 per year..."[1], so that's 0.007% of yearly CO2 emissions. Germany alone emits 700 million tons of CO2 per year, so that would be 0.3% of their share.[2]
It seems like increasing adoption of electric vehicles would do a lot more to solve this problem. Ground transportation is responsible for 161 million tons per year in Germany (23% of their emissions).
1. https://en.wikipedia.org/wiki/Carbon_dioxide#In_Earth's_atmo...
2. https://ourworldindata.org/co2/country/germany
Germany’s problem isn’t the transport sector, it’s the electricity and heat sector.
Compare Germany and France here:
> https://ourworldindata.org/grapher/ghg-emissions-by-sector?t...
While the speed limit would save 2 million tons of CO2 per year, keeping the remaining six nuclear plants running and shutting down coal instead would save 35(!) times more of CO2 per year (70 million tons).
Compare Germany and France here:
> https://ourworldindata.org/grapher/ghg-emissions-by-sector?t...
While the speed limit would save 2 million tons of CO2 per year, keeping the remaining six nuclear plants running and shutting down coal instead would save 35(!) times more of CO2 per year (70 million tons).
It's also the transport sector.
The cruise ship industry emitted 21930000 tons of CO2 in 2017.
https://www.tourismdashboard.org/explore-the-data/cruise-shi...
https://www.tourismdashboard.org/explore-the-data/cruise-shi...
And China is worse still. And people cooking non-electrically in Africa, let's get those first.
... or we can tackle multiple areas at once, perhaps? I'm not arguing the Autobahn must be high on the priority list, but simply pointing a finger "this is worse" and then turning away is also not constructive.
... or we can tackle multiple areas at once, perhaps? I'm not arguing the Autobahn must be high on the priority list, but simply pointing a finger "this is worse" and then turning away is also not constructive.
Effort is a resource, it takes a lot of work to change things so it absolutely makes sense to have some discipline, create a prioritized list and focus on the things with the most yield.
Too often people jump on the first thing they see and also ignore externalities. How many frustrated autobahn drivers will oppose CO2 reduction efforts elsewhere?
Too often people jump on the first thing they see and also ignore externalities. How many frustrated autobahn drivers will oppose CO2 reduction efforts elsewhere?
> How many frustrated autobahn drivers will oppose CO2 reduction efforts elsewhere?
Yeah, that is a good point. It must be weighed whether these particular 0.3% are worth it against other potentially contentious issues (and we should additionally consider whether it is likely to become more in the future, or if it's simply a large enough number to matter over the years regardless), hence also my cagey phrasing of "I'm not arguing the Autobahn [in particular] must be high on the priority list".
Still, though, simply pointing at cruise ships and forgetting about potential gains here is not the most constructive thing to do in my opinion.
Yeah, that is a good point. It must be weighed whether these particular 0.3% are worth it against other potentially contentious issues (and we should additionally consider whether it is likely to become more in the future, or if it's simply a large enough number to matter over the years regardless), hence also my cagey phrasing of "I'm not arguing the Autobahn [in particular] must be high on the priority list".
Still, though, simply pointing at cruise ships and forgetting about potential gains here is not the most constructive thing to do in my opinion.
> How many frustrated autobahn drivers will oppose CO2 reduction efforts elsewhere?
I am not sure how to put this nicely. Autobahn drivers that currently drive at the maximum speed are already quite likely already frustrated. They probably would like to fly a plane and they are constantly hindered by other cars on the road.
In other words, they are the kind of egoists that are unlikely to support any form of CO2 reduction already.
I am not sure how to put this nicely. Autobahn drivers that currently drive at the maximum speed are already quite likely already frustrated. They probably would like to fly a plane and they are constantly hindered by other cars on the road.
In other words, they are the kind of egoists that are unlikely to support any form of CO2 reduction already.
[deleted]
In the end the discussion about the speed limit is less about the environment but more about human safety as a much higher degree of accidents with high speeds end deadly.
Also from personal experience with some of the few highways in Germany without tempo limit ("most" have limits): If there is a truck going with ~80 km/h which is taken over by a bus going ~100 km/h and you take that over with 150km/h but there is nearly an accident because someone thinks it's a good idea to randomly accelerate to around 230 km/h or so on a not so empty highway you start wondering who thought that no tempo limit was a good idea.
Also from personal experience with some of the few highways in Germany without tempo limit ("most" have limits): If there is a truck going with ~80 km/h which is taken over by a bus going ~100 km/h and you take that over with 150km/h but there is nearly an accident because someone thinks it's a good idea to randomly accelerate to around 230 km/h or so on a not so empty highway you start wondering who thought that no tempo limit was a good idea.
Obviously higher speed translates into higher risk.
But given that less than 10% of all accidents resulting in bodily injuries happen on Autobahns, it looks like there are for more important factors to consider than speed alone.
https://www.destatis.de/DE/Themen/Gesellschaft-Umwelt/Verkeh...
But given that less than 10% of all accidents resulting in bodily injuries happen on Autobahns, it looks like there are for more important factors to consider than speed alone.
https://www.destatis.de/DE/Themen/Gesellschaft-Umwelt/Verkeh...
Just because other parts of the streets are "less safe" (in given statistics) doesn't mean you can't or should not improve the situations in other places if it's simple, straight forward and with little drawbacks.
(Which is what IMHO it the more important part in the discussion, is a cap of 130 km/h to low? Should it be 160 km/h?)
As a side note the statistics about accidents is not the relevant one in this discussion. The relevant on would be deadly accidents on highway vs. city vs. country side as well as deadly accidents on highway involving speeds > 130km/h and not involving speeds > 130 km/h.
And yes, if we look at deadly accidents of PKWs (~= normal car, i.e. not bus, truck, bike, etc.) then our country side streets are basically death traps.. But then if we consider they in Germany country side streets are often: Less maintained, seamed with trees, areas where wild animals might cross, used by drunk people going home at 3am, used by farming vehicles, used by people and bicycles, etc. it's not that surprising. And honestly there are a lot of country side roads where due to the road being worn down the maximal speed allowed is completely ridiculous.
Edit: Uhm, How did someone one a bicycle die in a traffic accident on a highway? ??
(Which is what IMHO it the more important part in the discussion, is a cap of 130 km/h to low? Should it be 160 km/h?)
As a side note the statistics about accidents is not the relevant one in this discussion. The relevant on would be deadly accidents on highway vs. city vs. country side as well as deadly accidents on highway involving speeds > 130km/h and not involving speeds > 130 km/h.
And yes, if we look at deadly accidents of PKWs (~= normal car, i.e. not bus, truck, bike, etc.) then our country side streets are basically death traps.. But then if we consider they in Germany country side streets are often: Less maintained, seamed with trees, areas where wild animals might cross, used by drunk people going home at 3am, used by farming vehicles, used by people and bicycles, etc. it's not that surprising. And honestly there are a lot of country side roads where due to the road being worn down the maximal speed allowed is completely ridiculous.
Edit: Uhm, How did someone one a bicycle die in a traffic accident on a highway? ??
I've seen more than a few instances of bikers thinking the side of the autobahn is a great place to take the fast route to some destination. Probably their GPS navigation or them being rather light on the entire "being alive" thing.
As your example shows, the speed is not the problem, the difference is. If I remember correctly, some research found the accidents to occur where people drive more different speeds rather than where people drive fast.
Overtaking someone without an empty lane of separation with a difference greater than 50km/h is unsafe any day of the week. You have no time to react if that person decides to overtake someone else, if there is something in front of them that they need to swerve around... on German dashcam channels the people that drive 180km/h+ get excessively angry when someone pulls to the left to overtake a truck and I just keep wondering if they have anger issues. I get that they feel like that person almost killed them but they're the ones trying to pass someone with a huge speed differential.
Perhaps we should address the differential if you want to address human safety. Put a speed camera in an unlimited section that just watches the speed difference between adjacent lanes. When too large, a cop can look at the recording and judge the safety of the situation for themselves. That's what they're doing with "smartphone cameras" now in the Netherlands: the camera spots that you are holding a smartphone and takes a picture, then 2 cops independently check the picture to see if the computer got it correct, and then you get a fine in the mail (which you can fight if you disagree).
Overtaking someone without an empty lane of separation with a difference greater than 50km/h is unsafe any day of the week. You have no time to react if that person decides to overtake someone else, if there is something in front of them that they need to swerve around... on German dashcam channels the people that drive 180km/h+ get excessively angry when someone pulls to the left to overtake a truck and I just keep wondering if they have anger issues. I get that they feel like that person almost killed them but they're the ones trying to pass someone with a huge speed differential.
Perhaps we should address the differential if you want to address human safety. Put a speed camera in an unlimited section that just watches the speed difference between adjacent lanes. When too large, a cop can look at the recording and judge the safety of the situation for themselves. That's what they're doing with "smartphone cameras" now in the Netherlands: the camera spots that you are holding a smartphone and takes a picture, then 2 cops independently check the picture to see if the computer got it correct, and then you get a fine in the mail (which you can fight if you disagree).
It seems like increasing adoption of electric vehicles would do a lot more to solve this problem.
Only if you do not get the electricity from burning coal and only if you can manufacture the cars in a way that the reduced emissions over their lifetimes are not offset by additional emissions during manufacturing and decommissioning.
Some more numbers for comparison, 2 Mt are 5.1% of Germany's passenger car motorway traffic emissions, 1.4% of Germany's transportation emissions, 0.27% of Germany's total emissions.
Only if you do not get the electricity from burning coal and only if you can manufacture the cars in a way that the reduced emissions over their lifetimes are not offset by additional emissions during manufacturing and decommissioning.
Some more numbers for comparison, 2 Mt are 5.1% of Germany's passenger car motorway traffic emissions, 1.4% of Germany's transportation emissions, 0.27% of Germany's total emissions.
> only if you can manufacture the car in a way that the reduced emissions over its lifetime are not offset by additional emissions during manufacturing and decommissioning.
This is a really bad faith argument I hear, a real eye roller. It never advances the conversation, it is a proverbial “just asking questions.”
Why bad faith? You, your friends and the things you read never bring this up about electric trains and busses. If a Tesla doesn’t amortize by some napkin analysis, neither would an electric bus by that same exact analysis - just because someone somewhere doesn’t like Tesla, doesn’t mean there’s any truth to “electric car emissions don’t amortize.” Just because some article online somewhere says electric busses do and Teslas don’t also doesn’t make it true.
The worst thing the environmental activist community could do is lose Tesla as an ally. Nobody is going to give a fuck about some cobalt mines somewhere, as horrible as they are, or whatever more substantive grievance it is, if we have to endure another 20 years of excess emissions because environmentally conscious people second guess the purchasing of electric cars.
This is a really bad faith argument I hear, a real eye roller. It never advances the conversation, it is a proverbial “just asking questions.”
Why bad faith? You, your friends and the things you read never bring this up about electric trains and busses. If a Tesla doesn’t amortize by some napkin analysis, neither would an electric bus by that same exact analysis - just because someone somewhere doesn’t like Tesla, doesn’t mean there’s any truth to “electric car emissions don’t amortize.” Just because some article online somewhere says electric busses do and Teslas don’t also doesn’t make it true.
The worst thing the environmental activist community could do is lose Tesla as an ally. Nobody is going to give a fuck about some cobalt mines somewhere, as horrible as they are, or whatever more substantive grievance it is, if we have to endure another 20 years of excess emissions because environmentally conscious people second guess the purchasing of electric cars.
Just because it might be "in bad faith" doesn't make the argument wrong. A lot of subsidies are being pumped into EVs on the assumption that they're a net benefit to CO2 goals. If they are not, or if it is only true for specific models, then that needs to be accounted for.
> If a Tesla doesn’t amortize by some napkin analysis, neither would an electric bus
That's not a given, these are two quite different vehicles with quite different usage scenarios. A Tesla might not actually get a lot of mileage in its lifetime, whereas a commercial bus would get as much mileage as possible.
Having said that, even if it were true that electric buses also are a net negative on emissions, then the obvious answer would be that we shouldn't subsidize those either.
> If a Tesla doesn’t amortize by some napkin analysis, neither would an electric bus
That's not a given, these are two quite different vehicles with quite different usage scenarios. A Tesla might not actually get a lot of mileage in its lifetime, whereas a commercial bus would get as much mileage as possible.
Having said that, even if it were true that electric buses also are a net negative on emissions, then the obvious answer would be that we shouldn't subsidize those either.
The argument is also just plain wrong though. Even if 100% of the power generation is from coal, it's still more efficient compared to individual petrol engines in cars. Large stationary constant (ish) speed fossil fuel generators will be more efficient than a bunch of little non constant speed petrol engines in cars.
Also after transmission loss, storage loss, losing the 'free' cabin heat and everything? I was under the impression it would at best be a wash.
Regardless, I see your point, and it's easier to switch one big coal plant than try to convince a million people to buy a new car. Better get those cars trickled in and work on the generation side in parallel. Just curious if this fun fact is really true.
Regardless, I see your point, and it's easier to switch one big coal plant than try to convince a million people to buy a new car. Better get those cars trickled in and work on the generation side in parallel. Just curious if this fun fact is really true.
That's not the argument though. Batteries require a lot of resources to produce, to the point where production of an EV can create more emissions than a comparable gasoline vehicle. If such an EV then fails to offset these emissions during its lifetime, it was a net negative.
Tesla's goal is to build cars that last for a million miles. Electric motor technology is already there and they are also working on making the other parts of the car last a similar length of time. Also notice how the new model S looks very similar to the old model S. Having old cars look like the newer version is also part of getting people to use cars for a million miles/
> Tesla's goal is to build cars that last for a million miles.
The average American drives 13,500 miles per year. Are you sure their goal is to have our grandchildren drive our old Teslas?
The average American drives 13,500 miles per year. Are you sure their goal is to have our grandchildren drive our old Teslas?
If they get automatic driving, you will be able to rent them out via a Uber like service (although I think Tesla's terms of service for their full self driving software package states you can only rent out your car using a system owned by Tesla). I'm sure a large number of people would do this while they were at work or overnight. Especially if it covered most of the cost of owning the car. With this scenario you could get to a million mile in a decade pretty easily.
PS. I'd love to own my grandparent's GTO, Cadallics, etc..
PS. I'd love to own my grandparent's GTO, Cadallics, etc..
I actually think your argument is pretty bad faith.
You are, on nothing but assumption alone, assuming you know this persons intentions, you know their opinions, where they got them, and other people just like them with their opinions.
Then you go on to ignore their actual argument completely, and say, essentially "who gives a fuck if we have another 20 years excess emissions if people end up in cars"
Well, presumably the OP does, because he was making a point as to why it is questionable that EVs are good for the environment.
You basically insulted his character and his argument by ad hominem, then said "who even gives a fuck? I just want everyone to own a Tesla!"
You are, on nothing but assumption alone, assuming you know this persons intentions, you know their opinions, where they got them, and other people just like them with their opinions.
Then you go on to ignore their actual argument completely, and say, essentially "who gives a fuck if we have another 20 years excess emissions if people end up in cars"
Well, presumably the OP does, because he was making a point as to why it is questionable that EVs are good for the environment.
You basically insulted his character and his argument by ad hominem, then said "who even gives a fuck? I just want everyone to own a Tesla!"
It is a simple fact that using electric cars is no good if you get the electricity from fossil fuels. And I remember reading that at least some electric cars are not reducing greenhouse emissions even if they are charged with non-fossil electricity. If one does not solve those two issues then we are better of continuing to driving with combustion engines. Also I said not a single word about Tesla.
No it's not true. E2e emissions are still lower
> It is a simple fact that using electric cars is no good if you get the electricity from fossil fuels.
Source? Where did you pull that from? An entire power plant dedicated to maximizing power generation efficiency is somehow equally efficient to a car engine that fits in like a cubic meter?
> And I remember reading that at least some electric cars are not reducing greenhouse emissions even if they are charged with non-fossil electricity.
I'd suggest trying to find a link for this too, because people need to be aware of it if it's true.
Source? Where did you pull that from? An entire power plant dedicated to maximizing power generation efficiency is somehow equally efficient to a car engine that fits in like a cubic meter?
> And I remember reading that at least some electric cars are not reducing greenhouse emissions even if they are charged with non-fossil electricity.
I'd suggest trying to find a link for this too, because people need to be aware of it if it's true.
> Only if you do not get the electricity from burning coal
And you mostly don't
> only if you can manufacture the cars in a way that the reduced emissions over their lifetimes are not offset by additional emissions during manufacturing and decommissioning
Luckily you can
And you mostly don't
> only if you can manufacture the cars in a way that the reduced emissions over their lifetimes are not offset by additional emissions during manufacturing and decommissioning
Luckily you can
> Luckily you can
At present, you can't guarantee that. EVs require more emissions during production, which must be offset during their lifetime. An unfavorable scenario would be having a lot of EVs that go under-used because of a trend towards less commuting. If you're planning to do very little driving, an ICE vehicle may well be better than an EV.
At present, you can't guarantee that. EVs require more emissions during production, which must be offset during their lifetime. An unfavorable scenario would be having a lot of EVs that go under-used because of a trend towards less commuting. If you're planning to do very little driving, an ICE vehicle may well be better than an EV.
I don't think fossil fuels will be economical for much longer. Per area, solar panels are cheaper than window glass. Costs are now down to $2 per watt. A decade ago it was $7 per watt. Lithium batteries are 1/10th the price they were in 2010. These trends seem to be continuing, and faster than experts project. For example: in 2015 a study looked at past estimates of battery prices versus observed prices.[1] They found that analysts were consistently pessimistic about cost reductions. They tried to correct for this pessimism and made the following prediction:
> ...battery pack costs may in some cases be as low as US$300 per kilowatt-hour today, and could reach US$200 by 2020. This cost development is notably cheaper and faster decreasing than I and many others expected.
The actual cost in 2020 was $137 per kWh.[2]
1. https://www.weforum.org/agenda/2015/04/will-falling-battery-...
2. https://www.statista.com/statistics/883118/global-lithium-io...
> ...battery pack costs may in some cases be as low as US$300 per kilowatt-hour today, and could reach US$200 by 2020. This cost development is notably cheaper and faster decreasing than I and many others expected.
The actual cost in 2020 was $137 per kWh.[2]
1. https://www.weforum.org/agenda/2015/04/will-falling-battery-...
2. https://www.statista.com/statistics/883118/global-lithium-io...
The emissions required to produce batteries are what puts EVs at an immediate disadvantage against ICEs the day they roll out of the factory. You then install a bunch of solar panels, which require their own batteries to store the energy that you'll use to charge your EV in the evening.
Before you proceed, please calculate how many miles you will need to drive to offset those emissions, compared to just using an ICE. You might save us all a lot of trouble.
Before you proceed, please calculate how many miles you will need to drive to offset those emissions, compared to just using an ICE. You might save us all a lot of trouble.
My first thought was "what would the speed limit be?"
130 km/hr (80 mph).
So, in addition to the obvious benefits, this speed limit apparently also reduces CO2 emissions. Honestly, not sure why anyone would argue against this.
130 km/hr (80 mph).
So, in addition to the obvious benefits, this speed limit apparently also reduces CO2 emissions. Honestly, not sure why anyone would argue against this.
It's easy to dismiss every 0.3% improvement as not worth it. I remember reading that the Gates foundation doesn't invest in things that don't have a chance of improving emissions by at least a percent.
But the full picture is to look at both sides. To gain this 0.3% emission reduction, what do we lose?
I love the speed-limit-less autobahn. I'm Dutch but now living in Germany, it's one of my favorite things. It's convenient that you often just go with the flow instead of having to look out if maybe you're doing 5km/h too fast. Definitely nice. But also, I really use it (160km/h+) maybe twice a year for a few minutes. It's fun, but only safe when you have at least 2 clear lanes and also damaging to the environment. Mostly I drive ~100 for the regular (non-pandemic) trips (to friends/family; work is by public transport).
So I'd miss it, but not a whole lot. The vast majority of people's trips would get longer by a marginal amount. Is that not worth it? I'm inclined to say it might be, but I ultimately don't know. I'd love a system where you get an allocation of, say, 30 minutes per year (and it carries over if you don't use it up), but that's not feasible. Or if a speed limit of 130 is posted, then that you can be caught exceeding it by any amount once every five years with a reasonable fine (not losing your license) unless you clearly created a dangerous situation (that's covered under separate laws already anyway). When lower limits are posted, it's always for a reason so there you just shouldn't go faster. Maybe that could allow people to do it if they're in a truly exceptional rush, or just want to, but still reduce emissions by virtually the same amount?
Or we just tax fuel at the price that it costs to take it back out of the air. Then it's simply your choice to drive as economically as you like. But that's also unfair if you live on minimum wage and need to commute by car. Or maybe the first, say, 75 liters a month are tax-deductible, same as with other deductibles? That would keep it affordable for necessary trips but still give the right incentive for those that want to waste fuel.
But the full picture is to look at both sides. To gain this 0.3% emission reduction, what do we lose?
I love the speed-limit-less autobahn. I'm Dutch but now living in Germany, it's one of my favorite things. It's convenient that you often just go with the flow instead of having to look out if maybe you're doing 5km/h too fast. Definitely nice. But also, I really use it (160km/h+) maybe twice a year for a few minutes. It's fun, but only safe when you have at least 2 clear lanes and also damaging to the environment. Mostly I drive ~100 for the regular (non-pandemic) trips (to friends/family; work is by public transport).
So I'd miss it, but not a whole lot. The vast majority of people's trips would get longer by a marginal amount. Is that not worth it? I'm inclined to say it might be, but I ultimately don't know. I'd love a system where you get an allocation of, say, 30 minutes per year (and it carries over if you don't use it up), but that's not feasible. Or if a speed limit of 130 is posted, then that you can be caught exceeding it by any amount once every five years with a reasonable fine (not losing your license) unless you clearly created a dangerous situation (that's covered under separate laws already anyway). When lower limits are posted, it's always for a reason so there you just shouldn't go faster. Maybe that could allow people to do it if they're in a truly exceptional rush, or just want to, but still reduce emissions by virtually the same amount?
Or we just tax fuel at the price that it costs to take it back out of the air. Then it's simply your choice to drive as economically as you like. But that's also unfair if you live on minimum wage and need to commute by car. Or maybe the first, say, 75 liters a month are tax-deductible, same as with other deductibles? That would keep it affordable for necessary trips but still give the right incentive for those that want to waste fuel.
> I'd love a system where you get an allocation of, say, 30 minutes per year (and it carries over if you don't use it up), but that's not feasible.
We have that limit, it is called mineral oil tax.
We have that limit, it is called mineral oil tax.
That is a bad way to limit things as the yellow vest movement demonstrated.
> Or we just tax fuel at the price that it costs to take it back out of the air
Common we can't just tax fossil energy with a bigger amount of energy. That's not gonna solve anything.
Common we can't just tax fossil energy with a bigger amount of energy. That's not gonna solve anything.
Sorry to be naming a brand rather than a generic technique, but they're the only ones I know of: have you heard of Climeworks? What they do is run machines on renewable energy that take CO2 out of the air. (I have a subscription to support it because I think we'll need the tech to be mature sooner rather than later.)
It definitely would be more efficient to just use that renewable energy directly until we're at 100% renewable energy, but we'll still have chemical reactions. Cement for buildings, creating plastics, space launches, currently airplanes (but it looks like electrofuels might become a thing to solve that), there are a bunch of things for which we'll need this unless we have some breakthrough.
Similarly, if you want to run your combustion engine on the Autobahn, I don't see the problem if you clean up after yourself in some way. Causing more emissions while cleaning up, as you argue, is obviously not cleaning up so that's not what I'm proposing.
Another popular route is to buy these credits, where supposedly someone else will not burn down a particular piece of forest because you bought it and so you can say that you reduced global emissions. While better than nothing, I'm not sure those are as effective as something easily verifiable like Climeworks (easy to see if the machine really poops out solid CO2 as claimed, and easy to see if it runs on renewable energy).
It definitely would be more efficient to just use that renewable energy directly until we're at 100% renewable energy, but we'll still have chemical reactions. Cement for buildings, creating plastics, space launches, currently airplanes (but it looks like electrofuels might become a thing to solve that), there are a bunch of things for which we'll need this unless we have some breakthrough.
Similarly, if you want to run your combustion engine on the Autobahn, I don't see the problem if you clean up after yourself in some way. Causing more emissions while cleaning up, as you argue, is obviously not cleaning up so that's not what I'm proposing.
Another popular route is to buy these credits, where supposedly someone else will not burn down a particular piece of forest because you bought it and so you can say that you reduced global emissions. While better than nothing, I'm not sure those are as effective as something easily verifiable like Climeworks (easy to see if the machine really poops out solid CO2 as claimed, and easy to see if it runs on renewable energy).
It's not that people "want" to run combustion engines or use fossil fuels. The problem is that over 80% of the world energy output comes from fossil fuels at the moment. Taking the CO2 out then requires more energy than we got out of it in the first place.
So we would need to reduce our fossil fuel usage by something like 90% to have enough energy from renewables to be able to extract the CO2 back (that's just new emission, don't even think about recouping the CO2 from over a century of fossil usage). It's not possible unless we drastically reduce energy consumption to pre-industrialization levels, but with 7+ billion people. It's gonna be back to riding horses.
Barring breakthroughs or divine intervention, there's not gonna be a magical 100% renewable energy replacement at current consumption rates. Fossil fuels are the "free" energy our world as we know it runs on, we don't just have a choice, or can tell people to clean up after themselves via taxes. It's just dancing around the problem, not a solution to anything.
So we would need to reduce our fossil fuel usage by something like 90% to have enough energy from renewables to be able to extract the CO2 back (that's just new emission, don't even think about recouping the CO2 from over a century of fossil usage). It's not possible unless we drastically reduce energy consumption to pre-industrialization levels, but with 7+ billion people. It's gonna be back to riding horses.
Barring breakthroughs or divine intervention, there's not gonna be a magical 100% renewable energy replacement at current consumption rates. Fossil fuels are the "free" energy our world as we know it runs on, we don't just have a choice, or can tell people to clean up after themselves via taxes. It's just dancing around the problem, not a solution to anything.
Yes it is a lot. Removing inefficiency from our system means everything including the stuff you love like driving fast without limit.
While your numbers are probably accurate, it's not helpful to dismiss suggestions like this with alternatives.
We need to do everything we can. Every 0.3% chunk helps.
We need to do everything we can. Every 0.3% chunk helps.
I'm sure if you used a bus and train instead of a car, you'd reduce way more. But hey, 2M is "really big number" so, let's impress people with that one.
Seriously though, the time they spent discussing this could've probably been spent more productively discussing more environmentally impactful measures. This seems like busy work to be able to tell the voters "Look! We're doing something about the problem!".
Seriously though, the time they spent discussing this could've probably been spent more productively discussing more environmentally impactful measures. This seems like busy work to be able to tell the voters "Look! We're doing something about the problem!".
And by "doing something" we mean, doing something ineffective, and you bear all of the burden, and get none of the benefit.
If you told a compiler guy about an optimization that would speed up code 0.3% he would be pretty happy.
This isn't that. This is about lowering your server power consumption per annum by 0.3% while lowering the performance of the programs running on that server by anywhere between 0% - 30%. If it is 0% then YAY, if it is a 30% decrease then probably not-so-YAY.
When it comes to cars, the result would be some people would trade longer travel times for lower carbon emissions (while a lot of people do not regularly travel at high speeds on the autobahn anyway if ever). Another question is how indirect factors play out, e.g. will this lead to cars lasting longer because lower speeds will put less strain on engines and other components, or last less long because cars will be operated for longer periods of time per trip. Or e.g. lower speeds would also put less strain on the street requiring less maintenance and repairs.
My point, I guess, is that it isn't as simple as it sounds at first.
When it comes to cars, the result would be some people would trade longer travel times for lower carbon emissions (while a lot of people do not regularly travel at high speeds on the autobahn anyway if ever). Another question is how indirect factors play out, e.g. will this lead to cars lasting longer because lower speeds will put less strain on engines and other components, or last less long because cars will be operated for longer periods of time per trip. Or e.g. lower speeds would also put less strain on the street requiring less maintenance and repairs.
My point, I guess, is that it isn't as simple as it sounds at first.
That doesn't quite work as an analogy. Reducing speed limits leaves the peak throughput of the road the same: a car arrives every 2 seconds. The only thing it changes is the latency, or the amount of time an individual vehicle needs to travel a given distance.
The humans driving the cars experience the latency. I literally don't care how many other cars drove on the same road in the same hour; I care how long my trip takes.
You should also care about your chance of a serious accident. Germany's motorway accident rate doesn't compare favourably with e.g. the UK or France, although it's a difficult comparison to make.
This got me curious. I cannot really find reliable numbers only concerning motorway accidents, at least not this quickly, but when it comes to total road fatalities, it appears Germany is doing worse than the UK but a lot better than France: https://i.imgur.com/ZPHb8cz.png [1]
PS: the US had in 2019 about 110 road fatalities per million [2], the UK had about 26 [1], France 48 [3] and Germany 37 [4].
[1] From page 22 of https://assets.publishing.service.gov.uk/government/uploads/...
[2] http://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/8...
[3] https://www.connexionfrance.com/French-news/Road-deaths-in-m...
[4] https://www.destatis.de/EN/Themes/Society-Environment/Traffi...
PS: the US had in 2019 about 110 road fatalities per million [2], the UK had about 26 [1], France 48 [3] and Germany 37 [4].
[1] From page 22 of https://assets.publishing.service.gov.uk/government/uploads/...
[2] http://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/8...
[3] https://www.connexionfrance.com/French-news/Road-deaths-in-m...
[4] https://www.destatis.de/EN/Themes/Society-Environment/Traffi...
Oh I do. Having driven in Germany for 6 months (and on periodic business trips) and the US for 30+ years, Germany is a dream from risk of accident, serious accident, and fatality risk compared to the US.
The individual car (the individual program) will take longer to complete a task.
To clarify, I was just trying to address the question of whether the magnitude is large, not the question of how to weigh the various trade-offs.
The purpose is to reduce the chance of the server room flooding (gradually or catastrophically) by some fraction.
As a side benefit, it also reduces the chance of a server catching fire by about half.
As a side benefit, it also reduces the chance of a server catching fire by about half.
Sure, but in this case all the elephants are still left standing in the room. And it seems pretty clear that buy-in from the general public is not an infinite resource, so these kinds of changes with minuscule impact but significant public perception of the downsides might not be the way to go. I mean, would you be happy about a 0.3% speed improvement for your compiler at the cost of requiring every source file to be < 4 KB? Especially when the compiler doesn't even inline functions yet?
(Disclaimer: I have nothing against paper straws or reasonable speed limits. But I know that other people do.)
(Disclaimer: I have nothing against paper straws or reasonable speed limits. But I know that other people do.)
OTOH you can see it as a litmus test (or "foot in the door") for whether people would be willing to make larger sacrifices. Every time there's a discussion of something with a bigger impact, people shut it down because they don't like the personal sacrifice required of them, even when we're talking about their elephant contributions. Yet when you try to start small people still object because the impact is too small on its own and they purportedly want larger changes. I see it unfold right here on HN on almost a weekly basis now. I don't know how to have hope for this planet but it's pretty depressing to watch.
There are far more effective "low hanging fruit" to tackle than lowering the speed limit when it comes to reducing emissions.
- Transporting goods by rail instead of truck or plane. And while we're at it, cargo ships are huge polluters because they can save money when using low grade dirty fuel. Disallowing that practice would have a big effect, but that would require the global community to act (good luck with that).
- Increasing the use of public transport and other ways to lower the need to even drive a car, like (partial) work-from-home schemes, and political incentives driving their adoption.
- Increasing the efficiency of roads, first and foremost by getting smarter traffic flow control that reduces congestion (nothing in transport is more wasteful then a car just idling in a traffic jam). But even the quality of the street and type of pavement you use in roads can have a rather significant effect on fuel efficiency (regardless of whether the fuel is stored in a gas tank or a battery).
Reductions of emissions is one important piece of becoming carbon neutral, but not the only piece. Renewable energy sources and other technologies that will take carbon out of the atmosphere again play another important role in the complex solution that is needed. And e.g. with renewable sources Germany might not look too bad internationally, but we're greatly lacking behind our own goals, and mostly for political reasons.
- Transporting goods by rail instead of truck or plane. And while we're at it, cargo ships are huge polluters because they can save money when using low grade dirty fuel. Disallowing that practice would have a big effect, but that would require the global community to act (good luck with that).
- Increasing the use of public transport and other ways to lower the need to even drive a car, like (partial) work-from-home schemes, and political incentives driving their adoption.
- Increasing the efficiency of roads, first and foremost by getting smarter traffic flow control that reduces congestion (nothing in transport is more wasteful then a car just idling in a traffic jam). But even the quality of the street and type of pavement you use in roads can have a rather significant effect on fuel efficiency (regardless of whether the fuel is stored in a gas tank or a battery).
Reductions of emissions is one important piece of becoming carbon neutral, but not the only piece. Renewable energy sources and other technologies that will take carbon out of the atmosphere again play another important role in the complex solution that is needed. And e.g. with renewable sources Germany might not look too bad internationally, but we're greatly lacking behind our own goals, and mostly for political reasons.
And yet modern software is amazingly inefficient and sometimes can be speed by 10x if not 100x - developer's time usually is valued more than performance and quality (and security) of the resulting software.
Lowering of a speed limit to reduce emissions is a similar trade-off - it would increase travel time - a scare resource for many people. I'm not saying it should not be done, but the cost is far from zero.
Lowering of a speed limit to reduce emissions is a similar trade-off - it would increase travel time - a scare resource for many people. I'm not saying it should not be done, but the cost is far from zero.
Every little bit counts, but it's really disheartening to see just how little it is in the grand scheme of things.
Another point of comparison: the mass of Earth's atmosphere is over 5 quadrillion tons.[1] 30 billion tons is 0.0006% or 6 parts per million.
These are all really big numbers so it's important to scale them down to something more comprehensible.
1. https://en.wikipedia.org/wiki/Atmosphere_of_Earth#Physical_p...
These are all really big numbers so it's important to scale them down to something more comprehensible.
1. https://en.wikipedia.org/wiki/Atmosphere_of_Earth#Physical_p...
1°C global warming sounds pretty small too, except its impact isn't.
This seems like a good way to annoy people more than anything. With electric cars and solar energy it won't really matter how fast anyone goes in a decade.
As I remember, at least as a narrative, it is clear that having speed limits reduces traffic jams, congestion and accidents, and will actually help get people faster from A to B. Of course, no speed limit is part of the "brand" Germany, but I guess this could be maintained by some work-around. Happy to revise my opinion when presented with evidence to the contrary, but to me speed limits are to Germany what gun control is to the US.
Yes! That analogy sums it up perfectly!
Except that German highways are one of the safest and America has school shootings.
They are both holy cows, but very different holy cows.
They are both holy cows, but very different holy cows.
> German highways are one of the safest
This may be in part due to licensing requirements. I'm led to believe that in Germany you have to demonstrate that you have some skill at driving to receive a license, plus it's fairly expensive. In the US, it varies some by state, but a driver's license tends to be under $100 (most states I've had to worry about cost around $50 or less) and all you really need to demonstrate is ability to park, stop at a stop sign, maybe turn around in a box, and use your turn signal. Sometimes there's a road test where you might have to drive around the block. Also, I'm not sure if Germany does it, but I'm not aware of any state in the US that requires you to test ever again except maybe if you lost your license. But then, I've lost my license a few times for various reasons, and only once when I was in Texas did I have to take the written test to get it back.
This may be in part due to licensing requirements. I'm led to believe that in Germany you have to demonstrate that you have some skill at driving to receive a license, plus it's fairly expensive. In the US, it varies some by state, but a driver's license tends to be under $100 (most states I've had to worry about cost around $50 or less) and all you really need to demonstrate is ability to park, stop at a stop sign, maybe turn around in a box, and use your turn signal. Sometimes there's a road test where you might have to drive around the block. Also, I'm not sure if Germany does it, but I'm not aware of any state in the US that requires you to test ever again except maybe if you lost your license. But then, I've lost my license a few times for various reasons, and only once when I was in Texas did I have to take the written test to get it back.
No re-test in Germany, it's already expensive enough with costs about 20x as high as in the US.
But there is a long lasting ongoing discussion if license renewals should be introduced, at least for people above a certain age limit (70 or 80).
But there is a long lasting ongoing discussion if license renewals should be introduced, at least for people above a certain age limit (70 or 80).
Germany had 3000 trafic related deaths in 2019.
In 2019 in the US, 20 people died in "school shooting deaths" meaning someone who was shot at a school of some kind
In 2019 in the US, 20 people died in "school shooting deaths" meaning someone who was shot at a school of some kind
The US had 36,096 traffic related deaths in 2019.
In Germany 0 people died in "school shooting deaths".
You are not seriously suggesting that the US does not have a gun problem?! Of course it has one. We can argue about how to solve it, but what you are doing is almost belittleing children who died like this.
In Germany 0 people died in "school shooting deaths".
You are not seriously suggesting that the US does not have a gun problem?! Of course it has one. We can argue about how to solve it, but what you are doing is almost belittleing children who died like this.
What problem are you trying to solve though? Germany has very low road fatality rates.
Germany's motorway fatality rate is similar to France and somewhat higher than the UK (similar size/density/wealth countries, I hope you agree).
Considering German drivers consider themselves particularly careful and attentive etc, that's unimpressive.
https://en.wikipedia.org/wiki/Autobahn#Safety:_international...
Considering German drivers consider themselves particularly careful and attentive etc, that's unimpressive.
https://en.wikipedia.org/wiki/Autobahn#Safety:_international...
German road fatalities are in the range of lowest 10-15 countries in the world, depending on exactly how you go about measuring it. You’re not impressed because it’s not in the bottom 5 (like the UK)? Are you also unimpressed by Japan narrowly losing to Sweden for the bottom spot?
There are other benefits to limiting the speed on highways. Safety for instance but also lower stress level not having to worry about somebody coming at you at 200km/h.
or shutting down a few lignite mines?
Coal power plants are already on schedule to be phased out by 2038 [1] but even now the mix of imported energy+coal+gas+wind+solar+hydro+biomass and the last few nuclear power stations on the grid are sometimes not enough to meet the power needs, which is why some fossil fuel plants were restarted, their shutdown pushed back and even new ones announced [2]. This is in part due to the insane plan to phase out both nuclear AND coal at the same time which when combined with ever rising electricity usage is certainly a bad combination. The misplaced hysteria over the Fukushima incident leading to this plan and situation is just utterly insane (Germany in comparison to the Japanese coastline: no tsunamis, no (major) earthquakes, etc.).
[1]: "On 26 January 2019, a group of federal and state leaders as well as industry representatives, environmentalists, and scientists made an agreement to close all 84 coal plants in the country by 2038. The move is projected to cost €40 billion in compensation alone to closed businesses. Coal was used to generate almost 40% of the country's electricity in 2018 and is expected to be replaced by renewable energy and natural gas.[18] 24 coal plants are planned to be closed by 2022 with all but 8 closed by 2030. The final date is expected to be assessed every 3 years." (https://en.wikipedia.org/wiki/Energy_in_Germany#Coal_power)
[2]: "As of 2017 Germany imported more than half of its energy" and "In 2020 a number of previously shut down fossil gas plants (Irsching 4, Irsching 5) were restarted quoting "heavy fluctuations of level of power generated from the wind and sun"[78] and a new fossil gas power plant was announced by RWE near the former Biblis nuclear power plant shut down in 2017. The project is declared as part of "decarbonization plan" where renewable energy capacity is accompanied by fossil gas plants to cover for intermittency.[79] A new fossil gas power plant will be also opened from 2023 in Leipheim, Bavaria to compensate for loss of power caused by "nuclear exit" in this region.[80] In 2021 plan to decommission Heyden 4 coal power plant was cancelled and the plant remains online to compensate for shutdown of nuclear power plan in Grohnde." (https://en.wikipedia.org/wiki/Energiewende#After_2017)
[1]: "On 26 January 2019, a group of federal and state leaders as well as industry representatives, environmentalists, and scientists made an agreement to close all 84 coal plants in the country by 2038. The move is projected to cost €40 billion in compensation alone to closed businesses. Coal was used to generate almost 40% of the country's electricity in 2018 and is expected to be replaced by renewable energy and natural gas.[18] 24 coal plants are planned to be closed by 2022 with all but 8 closed by 2030. The final date is expected to be assessed every 3 years." (https://en.wikipedia.org/wiki/Energy_in_Germany#Coal_power)
[2]: "As of 2017 Germany imported more than half of its energy" and "In 2020 a number of previously shut down fossil gas plants (Irsching 4, Irsching 5) were restarted quoting "heavy fluctuations of level of power generated from the wind and sun"[78] and a new fossil gas power plant was announced by RWE near the former Biblis nuclear power plant shut down in 2017. The project is declared as part of "decarbonization plan" where renewable energy capacity is accompanied by fossil gas plants to cover for intermittency.[79] A new fossil gas power plant will be also opened from 2023 in Leipheim, Bavaria to compensate for loss of power caused by "nuclear exit" in this region.[80] In 2021 plan to decommission Heyden 4 coal power plant was cancelled and the plant remains online to compensate for shutdown of nuclear power plan in Grohnde." (https://en.wikipedia.org/wiki/Energiewende#After_2017)
Why not both? The green party is against mining under the hambacher forest and for the speed limit.
Personally, I would welcome a speed limit on the Autobahn. OTOH, I don't own a car, so that's very easy for me to say since it wouldn't affect me.
However, I don't think this is going to happen anytime soon. Outlawing music or the Internet would be more popular in Germany than a speed limit on the Autobahn. Every couple of years some politician floats the idea, and inevitably, the public backlash is huge, so nothing happens. Nothing will happen this time, either.
Anyway, I have a gut feeling that moving all that cargo rolling around on the Autobahn every day to trains would have a bigger impact, but after decades of giving cars and roads preferential treatment and minimizing investments into the rail network, this would take at least a couple of years of intense construction work, which I don't see happening, either.
However, I don't think this is going to happen anytime soon. Outlawing music or the Internet would be more popular in Germany than a speed limit on the Autobahn. Every couple of years some politician floats the idea, and inevitably, the public backlash is huge, so nothing happens. Nothing will happen this time, either.
Anyway, I have a gut feeling that moving all that cargo rolling around on the Autobahn every day to trains would have a bigger impact, but after decades of giving cars and roads preferential treatment and minimizing investments into the rail network, this would take at least a couple of years of intense construction work, which I don't see happening, either.
Why would you welcome a speed limit on the autobahn when you don't drive?!
For environmental reasons. Also, AFAIK, a significant portion of traffic accidents on the Autobahn could be avoided by introducing a speed limit.
But like I said, I do not consider it likely because it is not popular at all. And frankly, we have bigger fish to fry, both where the environment is concerned and things like traffic safety.
But like I said, I do not consider it likely because it is not popular at all. And frankly, we have bigger fish to fry, both where the environment is concerned and things like traffic safety.
The title of the article suggests that a speed limit on the autobahn would reduce CO2 emissions.
1. It's a 0.3% reduction of the German CO2 emissions so that's not really a useful point.
2. Killing 100 people also reduces CO2 emissions, doesn't make it a good idea...
2. Killing 100 people also reduces CO2 emissions, doesn't make it a good idea...
0.3% is not an insignificant amount. Find a few more things like this to do to reduce emissions and it will add up.
Indeed, especially given the negligible amount of time this will add to a given commute, i.e. the majority of people's regular trips. Unless you drive from Munich to Hamburg at these speeds, but then you're just being a jerk to everyone who has to still live on this planet and should really be looking at the 300km/h trains. (Yes, they don't run every time they're scheduled for, but if more people put more money into the system, the system can improve.)
Because you might still sit in a (slow going) car on a highway and high-speed crashes involving other (slower going) cars can still end deadly for the passengers on the slow car.
Most highways in Germany already have a speed limit and setting limits for the few areas where it's not the case sounds like a good think for me as I had some quite negative experience with people going way to fast (for the amount of traffic).
But I also feel that the 130cap is a bit low, while taking over cars I would like to be able to go a bit faster. Like ~145?? or so?
Most highways in Germany already have a speed limit and setting limits for the few areas where it's not the case sounds like a good think for me as I had some quite negative experience with people going way to fast (for the amount of traffic).
But I also feel that the 130cap is a bit low, while taking over cars I would like to be able to go a bit faster. Like ~145?? or so?
Better introduce a speed limit for SUV and ICE cars, and make it mandatory for them to use the right lane.
No speed limit for electric cars. Helps adoption and Germany keeps one of the last things that make it special.
Or just generalize it. Why bother with labels? Manufacturers will make technically-not-an-SUV to get around it. Make sure the emissions of a particular model are known to the owner and set permissions based on emission levels, since emissions is what we're actually trying to optimize.
Optimizing emissions has lead to "teaching to the test" in motor control software before.
Hmm. No speed limit does seem a little wasteful because everyone floors it and goes to max fuel consumption.
However, what's the impact of reducing the limit from 130 to 100? Suddenly commute times increase by 30 percent. That can be disruptive for people with longer commutes, especially since afaik the Autobahns are good enough that you can live in $LARGE_CITY and work in $NEXT_LARGE_CITY if you want.
However, what's the impact of reducing the limit from 130 to 100? Suddenly commute times increase by 30 percent. That can be disruptive for people with longer commutes, especially since afaik the Autobahns are good enough that you can live in $LARGE_CITY and work in $NEXT_LARGE_CITY if you want.
> commute times increase by 30 percent
Insert a huge citation needed banner...
- most commutes aren't hundreds of kilometers, so a large share of your time is usually not spent on a highway
- you usually can't drive the maximum speed on the highway the whole time regardless
- you definitely can't drive the maximum speed on the highway the whole time during rush hour (which frankly covers most of the day if you look at traffic level plots)
- maybe try planning a couple commutes (yours, your friend's, heck even take that insanely long commute of this friend of a friend) in googly maps with traffic enabled and set to rush hour and with the two speed limits. (Don't actually know if gmaps can do speed limits, but maps.openrouteservice.org can and already tells you it's not a 30% difference.)
- even if it would be 30% on top of a regular, say, 20 minute commute, that's 6 extra minutes. You're hardly going to notice the difference but your emissions go from iirc ~7 l/100km to ~4.5 (source: my girlfriend's car, looking at the fuel use indicator, but it's hard to say accurately because gradients and wind and stuff throw it off and I don't have perfect recall). It will save you a bunch of cash, if you need a selfish reason to do this for.
Insert a huge citation needed banner...
- most commutes aren't hundreds of kilometers, so a large share of your time is usually not spent on a highway
- you usually can't drive the maximum speed on the highway the whole time regardless
- you definitely can't drive the maximum speed on the highway the whole time during rush hour (which frankly covers most of the day if you look at traffic level plots)
- maybe try planning a couple commutes (yours, your friend's, heck even take that insanely long commute of this friend of a friend) in googly maps with traffic enabled and set to rush hour and with the two speed limits. (Don't actually know if gmaps can do speed limits, but maps.openrouteservice.org can and already tells you it's not a 30% difference.)
- even if it would be 30% on top of a regular, say, 20 minute commute, that's 6 extra minutes. You're hardly going to notice the difference but your emissions go from iirc ~7 l/100km to ~4.5 (source: my girlfriend's car, looking at the fuel use indicator, but it's hard to say accurately because gradients and wind and stuff throw it off and I don't have perfect recall). It will save you a bunch of cash, if you need a selfish reason to do this for.
My commute is a 15 second walk from the bedroom to the office room. Been working from home for 20 years.
0
All I know about commutes is hearsay :)
Nearly nobody in Germany floors it all the time, because that's 250 km/h in a typical German car which is very tiring and inefficient. Much more typical that more than half drive 130 or less, a big group does 140 - 180ish depending on conditions and a tiny tiny group floors it all the time.
> and a tiny tiny group floors it all the time
I would like a max limit of ~160 km/h which would make driving the highways where such people appear over proportional often much more pleasant, also complement this with a awareness campaign about "Richtgeschwindigkeit" (~recommended max speed), accidents and insurance ;=)
I would like a max limit of ~160 km/h which would make driving the highways where such people appear over proportional often much more pleasant, also complement this with a awareness campaign about "Richtgeschwindigkeit" (~recommended max speed), accidents and insurance ;=)
Actual average speed on the Autobahn is 125 km/h [1].
[1] https://www.deutschland.de/en/topic/life/germany-and-the-aut...
[1] https://www.deutschland.de/en/topic/life/germany-and-the-aut...
Yes cars which can safely go 250 km/h are also not typical for the whole of Germany but more like the more wealth 30-40% or so. Either way there are some areas in where you have no speed limit and a over-proportional amount of people which can afford such cars and also frequently use their cars (for non very short) commute and as such are more likely to buy such car (most times for enjoyable rides and status less often for going fast). So in this areas they might be typical.
German highways are safer than most highways of most neighboring countries anduch safer than German country roads. They are also getting safer every year. And any speed limit will reduce CO2 emissions, that much should be clear.
The real question should be: What kind of virtue signalling is it that demands this (arbitrary) limit of 130kph? On most German highways you can easily go 160 in a modern medium-sized car. Electrical cars have much lower carbon dioxide emissions. So what's the fucking point?
I am really curious to understand why so many people see the absence of a speed limit as such a red flag. No one forces them to drive faster (source: I drive several hundreds of km per month around 120kph). Insurance companies already expect you to stay below 130 to get your full coverage. There are much more dangerous roads with speed limits in Germany. So why this fervor? I can only speculate but it really seems like some form of envy. There are people out there that do something unregulated and to some other people this is completely unacceptable.
The real question should be: What kind of virtue signalling is it that demands this (arbitrary) limit of 130kph? On most German highways you can easily go 160 in a modern medium-sized car. Electrical cars have much lower carbon dioxide emissions. So what's the fucking point?
I am really curious to understand why so many people see the absence of a speed limit as such a red flag. No one forces them to drive faster (source: I drive several hundreds of km per month around 120kph). Insurance companies already expect you to stay below 130 to get your full coverage. There are much more dangerous roads with speed limits in Germany. So why this fervor? I can only speculate but it really seems like some form of envy. There are people out there that do something unregulated and to some other people this is completely unacceptable.
> I can only speculate but it really seems like some form of envy. There are people out there that do something unregulated and to some other people this is completely unacceptable.
I second that. It just isn't German to have something so seemingly unregulated. People will call the police when periods of rests are ignored or a machine is turned on on a Sunday.
I second that. It just isn't German to have something so seemingly unregulated. People will call the police when periods of rests are ignored or a machine is turned on on a Sunday.
German here.
> What kind of virtue signalling is it that demands this (arbitrary) limit of 130km/h?
A lack of a speed limit (in an industrialized country) is uniquely German phenomena. By introducing a speed limit many consequences follow that i generally agree with, such as reduction of greenhouse gas emissions, lower maintenance cost of roads (although putting goods on trains would do a more), discouragement of buying cars that go significantly above the speed limit, making traveling smoother for people currently driving below the future speed limit, making cars less attractive compared to trains for intercity travel.
The point is that national irrationality (or more politically correct Culture-bound syndrome) cause ineffeciency, whether we are talking about South Korean fan death or the percieved need to be allowed to drive as fast as you want both does unnecessary harm. We know it's unnecessary because every other (comparable?) country can do without.
> What kind of virtue signalling is it that demands this (arbitrary) limit of 130km/h?
A lack of a speed limit (in an industrialized country) is uniquely German phenomena. By introducing a speed limit many consequences follow that i generally agree with, such as reduction of greenhouse gas emissions, lower maintenance cost of roads (although putting goods on trains would do a more), discouragement of buying cars that go significantly above the speed limit, making traveling smoother for people currently driving below the future speed limit, making cars less attractive compared to trains for intercity travel.
The point is that national irrationality (or more politically correct Culture-bound syndrome) cause ineffeciency, whether we are talking about South Korean fan death or the percieved need to be allowed to drive as fast as you want both does unnecessary harm. We know it's unnecessary because every other (comparable?) country can do without.
I don't know man, Germans never been known to posses much humour, but lately the no-fun-allowed mentality is really getting steam again. I think people feel oppressed or perspective-less, so they divert their anger into a zealous notion, and want to restrict and regulate for what is perceived as a righteous cause. There's so much ill will directed at all kinds of people currently, people traveling abroad, stadium visitors, youth gathering in parks. Not the same topic, but again, quick to condemn any kind of enjoyment without being reasonable.
Besides, I think it would self-sabotage their own automotive industry (which is the biggest part of Germans GDP). That 2 MT isn't gonna do anything, but the Autobahn is pretty much the only place that warrants buying nice expensive German cars (and for a lot of people cars become a huge motivation). So with a tempo limit it all kinda seems a bit pointless.
Besides, I think it would self-sabotage their own automotive industry (which is the biggest part of Germans GDP). That 2 MT isn't gonna do anything, but the Autobahn is pretty much the only place that warrants buying nice expensive German cars (and for a lot of people cars become a huge motivation). So with a tempo limit it all kinda seems a bit pointless.
As a German younger than 25 i would certainly like to buy a nice German car in the future. However what i find nice differs from "car go fast", "car makes load brum" or "car seats has female baby cow leather". I would like to see the German engineering focus more on utilitarian cars instead of "Top Gear worthy cars". A speed limit will help encourage the industry to find other areas to focus more on.
> (arbitrary) limit of 130kph?
It's not realy arbitrary, it's the "Richtgeschwindigkeit" on most (all?) highways with higher speed limits (the speed which you are recommended to not go over by a large degree and where your tend to pay less if you get into an accident while going over it).
A bit above 130 km/h is a point at which the degree of death tend to noticeable increase in case of accidents, relevantly this includes the death of uninvolved 3rd parties.
> No one forces them to drive faster (
Yes, but other people drive fast and potentially into you, I have seen more then just one or two near accidents because of people driving noticeable above 160 km/h on highway areas where it was allowed but not recommendable due to the amount of traffic. And I don't drive a lot.
I also can forward the opinion my Dad has on this (who frequently needs to do multiple day trips spawning 300-500km/h and drives a car which can go ~200km/h). I don't remember the exact wording but it was basically something along side of:
A speed limit makes sense but 130 km/h is to low. Way to many drivers are way to bad on judging when the traffic allows you to go 180 km/h and when it is dangerous. To many people think that because there is no tempo limit they can go with 180 or more on a non empty highway and I have seen and been involved in way to many nearly accidents which likely would have been deadly (if they would have happened) which involved people going at such high speeds. I mean sure if the highway is empty and dry and I'm not sleepy then going with 180 km/h or even more can be quite fun, but I which people would only do so if the highway is empty and dry. [And then he went on, about people being even worse at estimating safe speeds if rain, fog or snow is involved and how he was more then once nearly killed by someone going way to fast under such conditions.]
(now back to my opinion): IMHO going fast is fun, but the highway is not meant to be fun it's meant to allow safe driving and going with really high speeds in the wrong situations you are not just endangering yourself. Anyway, idk if a cap at 130 is the right thing and there are also other factors like the environmental damage because of the ware of the rubber wheels, noise etc.
It's not realy arbitrary, it's the "Richtgeschwindigkeit" on most (all?) highways with higher speed limits (the speed which you are recommended to not go over by a large degree and where your tend to pay less if you get into an accident while going over it).
A bit above 130 km/h is a point at which the degree of death tend to noticeable increase in case of accidents, relevantly this includes the death of uninvolved 3rd parties.
> No one forces them to drive faster (
Yes, but other people drive fast and potentially into you, I have seen more then just one or two near accidents because of people driving noticeable above 160 km/h on highway areas where it was allowed but not recommendable due to the amount of traffic. And I don't drive a lot.
I also can forward the opinion my Dad has on this (who frequently needs to do multiple day trips spawning 300-500km/h and drives a car which can go ~200km/h). I don't remember the exact wording but it was basically something along side of:
A speed limit makes sense but 130 km/h is to low. Way to many drivers are way to bad on judging when the traffic allows you to go 180 km/h and when it is dangerous. To many people think that because there is no tempo limit they can go with 180 or more on a non empty highway and I have seen and been involved in way to many nearly accidents which likely would have been deadly (if they would have happened) which involved people going at such high speeds. I mean sure if the highway is empty and dry and I'm not sleepy then going with 180 km/h or even more can be quite fun, but I which people would only do so if the highway is empty and dry. [And then he went on, about people being even worse at estimating safe speeds if rain, fog or snow is involved and how he was more then once nearly killed by someone going way to fast under such conditions.]
(now back to my opinion): IMHO going fast is fun, but the highway is not meant to be fun it's meant to allow safe driving and going with really high speeds in the wrong situations you are not just endangering yourself. Anyway, idk if a cap at 130 is the right thing and there are also other factors like the environmental damage because of the ware of the rubber wheels, noise etc.
Indeed, highways are not for fun and Germany already has the Nurburgring for that purpose anyway.
However I'm not advocating taking Germany's unlimited speeds away. It's up to them IMO.
However I'm not advocating taking Germany's unlimited speeds away. It's up to them IMO.
We will be voting on the issue (indirectly) in the general election.
This is an interesting comment because I generally agree with your arguments (e.g. that electric is better, so what's the point limiting them), but you draw a different conclusion, namely that there should simply not be a limit, while also not saying that there should be a limit for combustion engines even though you just argued against those.
(Battery) Electric is not just "better" and then personal car use of intercity travel is ok. If Electric cars only need to be build to reach 130 Km/h they can be made more efficient and cheaper (allowing for earlier and larger adoption). Cars that want to be faster and need quadratically more energy with speed need to be heavier, need more Lithium.
That still sounds better than constant GHG emissions to me, even if it's not perfect. If you have numbers that show differently (perhaps the cut-off point as you scale up from electric bike to airplane lies right at large or fast cars?) I'd be happy to learn that I'm wrong, though.
That one stretch of road is safer than some other arbitrary stretch of road does not mean that imposing speed limits would not help make the first road even safer.
Frankly I don't like people driving at excessive speeds around me, because it puts my life in danger. Not that hard to understand.
Don’t most German cars already have an electronic limiter to 155mph?
Apparently, this ~is~ was a Gentlemen's agreement of the German automakers, to stop the competition for top-speed at 250km/h. Most adhered to it, except Porsche. But nowadays most offer you a special package which will remove the artificial limit, often for another 4-5 digit amount.
I think most production cars cannot sustain that - to say nothing of their tyres.
I guess most top out somewhere around 200-225 kph (124-140 mph). And tyres even sooner - 160-180 kph is my guess.
Yep, you need around 200 horsepower to reach 250km/h. Most cars have less power [1]. Consequently they also use cheaper tires, not rated for high speeds. Common tire limits are 190 and 210 km/h [2].
[1] https://www.destatis.de/DE/Presse/Pressemitteilungen/2018/11... [2] https://en.wikipedia.org/wiki/Tire_code#Speed_rating
[1] https://www.destatis.de/DE/Presse/Pressemitteilungen/2018/11... [2] https://en.wikipedia.org/wiki/Tire_code#Speed_rating
Keeping Germany’s last six nuclear plant running and shutting down the coal-fired power plants Neurath, Niederaußem and Weisweiler minus a remaining capacity of 900 MW would save 70 million tons of CO2 per year which is about 10% of Germany’s total emissions annually.
> https://de.wikipedia.org/wiki/Liste_von_fossilen_Kraftwerken...
> https://de.wikipedia.org/wiki/Liste_der_Kernreaktoren_in_Deu...
But I guess symbolism is more important than actually doing something that effectively reduces emissions.
So let’s introduce a speed limit and shut down all nuclear power plants, yay.
> https://de.wikipedia.org/wiki/Liste_von_fossilen_Kraftwerken...
> https://de.wikipedia.org/wiki/Liste_der_Kernreaktoren_in_Deu...
But I guess symbolism is more important than actually doing something that effectively reduces emissions.
So let’s introduce a speed limit and shut down all nuclear power plants, yay.
I personally think it is just symbolic to introduce a speed limit. It seems to be mostly about hurting people with expensive cars, so they cannot have fun with them anymore.
It does nothing. 0.3% does not help. It is optimizing towards a local maximum and does not bring us closer to the global maximum.
We need to get rid of the whole concept of commuting to work via car. We need to reduce commutes altogether significantly. We need to reduce ICEs and use electric vehicels fueled by renewable energy instead.
If we accomplish those three, the speed of the remaining vehicles will not matter at all. If we do not accomplish those things, we are screwed anyway.
Introducing a speed limit will just give people the same warm feeling of a reusable shopping bag full of products with plastic packaging. People just want to do something, even if they know, it will not save them. And if it hurts the "enemy" and makes them seem like the good guys, all the better.
It does nothing. 0.3% does not help. It is optimizing towards a local maximum and does not bring us closer to the global maximum.
We need to get rid of the whole concept of commuting to work via car. We need to reduce commutes altogether significantly. We need to reduce ICEs and use electric vehicels fueled by renewable energy instead.
If we accomplish those three, the speed of the remaining vehicles will not matter at all. If we do not accomplish those things, we are screwed anyway.
Introducing a speed limit will just give people the same warm feeling of a reusable shopping bag full of products with plastic packaging. People just want to do something, even if they know, it will not save them. And if it hurts the "enemy" and makes them seem like the good guys, all the better.
0.3% of German emissions or 0.007% of Global emissions is the emission of half a million of people with average emissions or more than 20 million africans.
As for your comment on local vs global maxima i don't see any reason why optimizing a number should be non convex, such that local optima and global optima differ.
> People just want to do something, even if they know, it will not save them. And if it hurts the "enemy" and makes them seem like the good guys, all the better.
Maybe it is about boiling the frog and showing that German poltics can prioritize climate over perpetuating the current state of industry. Rail is helped by a top speed. Electrical cars are also made more efficient and less environmentally damaging when their top speed is lowered.
As for your comment on local vs global maxima i don't see any reason why optimizing a number should be non convex, such that local optima and global optima differ.
> People just want to do something, even if they know, it will not save them. And if it hurts the "enemy" and makes them seem like the good guys, all the better.
Maybe it is about boiling the frog and showing that German poltics can prioritize climate over perpetuating the current state of industry. Rail is helped by a top speed. Electrical cars are also made more efficient and less environmentally damaging when their top speed is lowered.
> It seems to be mostly about hurting people with expensive cars, so they cannot have fun with them anymore.
Absolutely not. Every car can go well above the speed limits of every European country except Germany's unlimited stretches for obvious reasons. I can perfectly well drive 160km/h to work in a median/average car, it's just not efficient. And enjoying your sports car is something you should really do on a race track. It can be safe to drive fast when it's totally empty, but you don't need a sports car to drive the kinds of speed where you want it to be empty.
This affects everyone roughly equally. Heck, it might even hit the average person worse because they wouldn't take random time off work to drive to and pay entrance and insurance for a race track.
At least for me it's not about spite; I'm a rich person myself. If someone wants to do sports on a public road when it's safe, go ahead, but also clean your fumes back out of the air when you're done please. It just turns out that we can't do attribution to atmospheric gasses, and historically we just conveniently ignored exhausts, so it feels weird to suddenly start requiring that you clean up after yourself.
Absolutely not. Every car can go well above the speed limits of every European country except Germany's unlimited stretches for obvious reasons. I can perfectly well drive 160km/h to work in a median/average car, it's just not efficient. And enjoying your sports car is something you should really do on a race track. It can be safe to drive fast when it's totally empty, but you don't need a sports car to drive the kinds of speed where you want it to be empty.
This affects everyone roughly equally. Heck, it might even hit the average person worse because they wouldn't take random time off work to drive to and pay entrance and insurance for a race track.
At least for me it's not about spite; I'm a rich person myself. If someone wants to do sports on a public road when it's safe, go ahead, but also clean your fumes back out of the air when you're done please. It just turns out that we can't do attribution to atmospheric gasses, and historically we just conveniently ignored exhausts, so it feels weird to suddenly start requiring that you clean up after yourself.
I'm generally opposed to climate change solutions that seem focused on punishing people who want to enjoy something. Advocacy focusing on making other people feel bad doesn't seem to scale. The risk of blowback is not worth tiny incremental improvements.
If someone wants to blast down the highway at 200mph, and they can do it in an electric car or pay for the cost of sequestering the carbon, I say let 'em.
I wouldn't want to die on the battlefield of telling people to stop enjoying the things they enjoy and when we can just tell them to pay for its cost.
If someone wants to blast down the highway at 200mph, and they can do it in an electric car or pay for the cost of sequestering the carbon, I say let 'em.
I wouldn't want to die on the battlefield of telling people to stop enjoying the things they enjoy and when we can just tell them to pay for its cost.
Do you have a suggestion how we can make the people blasting down the highway at 200mph pay for sequestering carbon, without making everyone pay for it?
Increasing fuel prices for the sake climate didn't turn out that popular in France. So if you have another solution that is implementable, please share.
Increasing fuel prices for the sake climate didn't turn out that popular in France. So if you have another solution that is implementable, please share.
They already do by the fact that 200mph speed is much more fuel consumption per unit of distance traveled than say 60mph.
There is no vehicle I know of that uses the same amount of fuel at 60mph as it does at 200mph for unit of distance traveled.
Include the tax in gasoline per unit of volume and the people going 200+ will pay much more than those going 60. (Much much more)
There is no vehicle I know of that uses the same amount of fuel at 60mph as it does at 200mph for unit of distance traveled.
Include the tax in gasoline per unit of volume and the people going 200+ will pay much more than those going 60. (Much much more)
Whow! Holy Cow! The final golfcarting show. Now one question remains: why produce cars going 200kph+ at all?
After lifelong indoctrination that cars give freedom and status, now a hiatus from speeding? My heart is bleeding!
What will the industry do now? And all the advertisment agencies? My my... revolution! We care about pollution!
With the experimental overhead catenary installed for lorries/trucks on 3 sectors of Autobahn now, I can even imagine bumper cars! Yay!
Aharrrharrrharrr!
edit: Thinking further about this it seems like this could profit from comprehensive roll-out of
https://en.wikipedia.org/wiki/Traffic_enforcement_camera
and section control.
Turns out we already have the infrastructure for it:
https://de.wikipedia.org/wiki/Mautbr%C3%BCcke
(Nudge, Nudge)