Or another example, if a train is being rerouted via the line to 242 Street, 137 Street, or South Ferry or it's rerouted via the to Harlem 148 Street, does the train operator has a choice to turn the into a and/or train?
Because I know if the train is equipped with an R62A or R62, it stays on the same train line, but I'm talking about a NTT like the R142's,R142A's,R188's,R143's,R160A/B,and R179's.
2 sets of a R179 has been built, so I guess the is going to test the 2 sets of the R179's anytime soon.