The point where th TO has to stop and reverse if overshooot
True...
Hehehe, set back limit, IIRC from a staff, he said when trains
overshoot this point, the train cannot reverse back to the station,
as the signal for the next oncoming train will be cleared for the
train to move.
For safety purposes, the train that overshoot have to proceed on
to the next station, unless they can trip the system and not let
the oncoming train to proceed...
Hmm, your turn. :D