NYC Subway Was Delayed by 1930s Signals. A Fix Is Finally Coming(nytimes.com)
nytimes.com
NYC Subway Was Delayed by 1930s Signals. A Fix Is Finally Coming
https://www.nytimes.com/2019/09/23/nyregion/nyc-mta-subway-signals.html
https://www.nytimes.com/2019/09/23/nyregion/nyc-mta-subway-signals.html
15 years ago China built the 19 mile Shanghai maglev for $1.3 billion. Top speed is 268 mph.
https://en.wikipedia.org/wiki/Shanghai_maglev_train