[CydeWeys]

The proven solution here is to have long-distance trains and short-distance trains running on separate tracks. No need to go crazy with anything way more complicated (and thus pricier and more prone to failure).

Like, in NYC, we have the subway, which has normal trains and express trains (on separate tracks), and then we've also got regional rail like MetroNorth, LIRR, and NJT, and then we've also got long distance rail like Amtrak to DC, Baltimore, Philadelphia, Boston, and others.

[inferiorhuman]

New York also separates the different lines on to different platforms. BART and Muni shove 1-5 routes on each platform and chaos ensues.