Tehachapi Route...one of my Faves...
8) Hello Midland,
I surmise, the dwarf signals are to provide protection to sidings...there is a difference between Intermediate signals, that allow movement even when red, and Absolute Signals, that do not permit movement.
With different routes, it's a crap shoot, as to whether signaling is done properly. Basically, the more the better, because even on the Tehachapi Route, an Advanced Approach Signal Aspect(yellow over red or yellow), can slow a train to Approach Speed(less than 30mph in this case), or Restricted Speed(less than 15mph).
I set up 91 tank cars(7 sets of 13 "Tank-Train style"), loaded in UP Bakersfield, and same mty in Mojave, with a BNSF Autorack train in the Bakersfield yard, and run the eastbound loaded Tank Train.
I let the autorack pass the loaded train, under priority 1, give the loaded TT priority 2, and the mty TT priority 3.
The three trains don't give each other trouble, however AI knows no length, and it's my responsibility to make sure the meets, correspond with siding length...I could shorten the train, but that would make it too easy!
ProtoClinch, is a switching route, Tehachapi Route, is a "long runner."
All AI, and me...even though my hotshot had to wait...
The Mother of all train meets, autorack at track speed...
SP_or_Bust's pushers...
Heavy train has priority...