SRich wrote: ↑Mon Jan 13, 2020 2:01 pm ]In addition to the NEC, MetroNorth, and the Keystone Corridor, Amtrak operates over the following cab-signalled freight lines: NS Pittsburgh Line (ex-PRR), CSX RF&P Subdivision, and CSX Boston Subdivision (installed in the Conrail-era). Expect quite a few P42s and P40s (AutoTrain service) to have cab signals. With modern computer technology, upgrading a locomotive to cab signalling isn't nearly the production it was in the steam era.
P32AC-DM have cab signals. If not they can not run on empire corridor (MNRR portion). Many P42 DC also have cabsignals. They need that so they can run on the NEC. Parts of the NEC have no wayside signals(except interlocking signals and approach) but only cabsignals.
And the new Amtrak owned SC-44 has also cabsignals for the NEC portion. I don't know for sure but its likely that a few P40DC also have cab signals.
Edited to add: in addition to its diesels being fitted with cab signals, many have been upgraded to full on ACSES II for the NEC, others have been upgraded to host railroad PTC, and some have ATSF automatic train stop pick ups. I don't think any use UP-style cab signals so host power is required on those rare mileage excursions.