William,
? The biggest problem/issue would be "what happens if two trains/locomotives are
crossing the reversing section at the same time?".? This situation is likely to confuse
the reverser to the point where it can't reach any decision about what to do - or even
where it continously changes the polarity of the reversing section back and forth.
? Even if the reverser simply sees the situation as a short ("I tried the other way and
it did not resolve the short - so I'll just set a short") it's a problem.??
? The point of an auto-reverser is to fix a possible short (reverse the polarity of the
reversing section) and allow the train to continue ... and to do so so quickly that you,
the human observer, don't really notice (just care?).
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?- hope this helps ... Jim in the PNW