In the hole at Cascade

Work train stopped by a red signal at Cascade, waiting on a meet with the fast approaching Acadian streamliner. 

This is a DC cab control layout. The layout is fully signalized using 40 block signals. The signal aspects, however, are not like prototype practice. Signal indications have nothing to do with whether a block is occupied by a train or not! They only serve to tell you if the upcoming block is set for your cab.

There is a pair of signals at every block junction. They are connected across the insulated rail joiners to sense if the voltage is the same on either side. A green signal indicates the block beyond is set to the same cab as the block you are currently in - so you can proceed past the signal. A red signal indicates the block beyond is either set to the other cab or neutral (not powered at all).

If you come upon a red signal you must stop. You cannot run through it, as there is no power available for you beyond it. You have to claim the block by turning the appropriate panel switch before proceeding into it.

The goal of the system is to allow you to operate a train without removing your eyes from it. You keep one hand on the throttle knob and just observe the signals as you travel. This has a more realistic feel than constantly pressing buttons on a controller. 

Power is a Tyco GP20. Bunk car and Kitchen Car are old Train Miniature kits.