#TIL that NJT's River LINE connects directly to the NEC (SEPTA, Amtrak) at Trenton, directly to the Atlantic City line at Pennsauken (NJT stole the AC line from Amtrak years ago, like they did the Clockers), & directly to the PATCO Speedline at Camden.
Dumb that it's Diesel but *now* I get the routing and the raison d'être.
Apparently I'd never seen a route map.
https://content.njtransit.com/sites/default/files/pdfs/light-rail/Riverline_021925_web.pdf