DCA is an exception (the law is a little more complicated; I was simplifying for the sake of the comment).
The law applies to heavy rail, not light rail - the NYC subway system is entirely heavy rail.
The law applies to heavy rail, not light rail - the NYC subway system is entirely heavy rail.
However, transit infrastructure is locked in once, built, so almost every other transit system in the country has this issue, because it was built before 2021.
https://www.vice.com/en/article/z3v5j3/us-airports-no-longer...