smallspy
Senior Member
Anything is possible if you want to spend enough money on it.Question, when ATC was planned out for the subway. Wouldn’t it be possible to put ATC equipment on the Hawker Siddeley H4s, H5s and H6 subway cars?
So yes, the older subway cars could have the full ATC/ATO system installed on them.
But the question is: why?
It is not. PTC is an overlay on an existing signal system, and the only system that it interfaces with onboard the train locomotive is the brakes. As well, there is a lot more room on a locomotive with which to fit new equipment that wasn't around when the thing was built. That's a much harder thing to do on a subway train, which is already designed to be shoehorned into a tunnel only slightly bigger than itself.It’s like putting PTC or Positive Train Control on a GP38-2 and a SD40-2 and it works.
Dan




