BGAS Signals - MagnumMacKivler/trakpak3 GitHub Wiki Back to BGAS Home Signals by Type Color Light Signals Type G (Tri-Light) Signals Searchlight Signals B&O Color Position Light Signals PRR Position Light Signals Upper Quadrant Semaphore Signals Hall Disc (Banjo) Signals Railroad Crossing Signals Signal Accessories Masts, Poles, Gantries, and Mounting Brackets Other Standard Color Arrangement (SCA)