reverse trolley

I'm one day building a layout with a straight track for a trolley line. I want it to go so far, stop, and reverse. Gets to the other end, stop, and go forward. Using DC power and the track is isolated and has it's own power.

I'm striking out finding a module to run a simple trolley/mine line where the train stops at each end for a programmable period, reverses and stops again at the other end. Running DCC, seams to be the problem. Also, using MRC DCC and not tied into a computer for control. I'm thinking it...