The only light rail operating in Washington State is LINK Light Rail, which Sound Transit operates using Siemens Mobility’s S700 model (although some older train sets are still used on the same tracks).
Looking at the Wikipedia page for the S700, you can find these trains all over the US, including California, Arizona, Georgia, North Carolina, Minnesota, Oregon, Texas, and Virginia. They seem to be popular in Europe, too.
[0] https://en.m.wikipedia.org/wiki/Siemens_S700_and_S70
From what I can tell, these train sets are as off-the-shelf as can be reasonably expected, although apparently LINK has ordered their trains to run on 1500 volts as that’s what their catenaries use. Perhaps you’re thinking of BART?
Looking at the Wikipedia page for the S700, you can find these trains all over the US, including California, Arizona, Georgia, North Carolina, Minnesota, Oregon, Texas, and Virginia. They seem to be popular in Europe, too. [0] https://en.m.wikipedia.org/wiki/Siemens_S700_and_S70
From what I can tell, these train sets are as off-the-shelf as can be reasonably expected, although apparently LINK has ordered their trains to run on 1500 volts as that’s what their catenaries use. Perhaps you’re thinking of BART?
-An occasional S700 passenger