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The Washington Metro has a stop at Reagan National (DCA), and BART goes to SFO. Baltimore light rail goes to BWI Marshall.

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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 silver line extension (hopefully opening by thanksgiving) includes a stop at IAD (Dulles airport, the third airport in the DC area class B airspace) as well.

Yes, that's because the relevant law was repealed last year. The Silver Line was actually the impetus to finally end the policy.

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...

Fascinating, til. Thanks!

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