Here’s a rail network map that shows the commuter rail lines of both New York City and Philadelphia. It’s by Evelyn Ivy, who explains on Mastodon that it took six months of work to complete. “Showing five different commuter rail systems (#CTRail, #MetroNorth, #LIRR, #NJTransit, and #SEPTA), this map depicts everywhere a passenger can get to by train from NYC or Philadelphia without using Amtrak.” (The keys are Trenton and New Haven, where you can hop from one system to the next.)

A couple of supremely detailed rail maps to bring to your attention, both of which show every line and station of long-distance, regional and commuter rail networks. There’s one for California, which uses a Beck-like, diagrammatic design, and one for the Northeast Corridor (see above), which opts for geographic accuracy. Despite the differences there’s a lot of overlap on the two design teams. Creative Commons licensed, with printed posters available.