1. The test installation eliminated wayside block signals, and trains relied solely on cab signals . 2. There are 5 cab signals , each corresponding to a speed. 3. These lamps correspond to the same cab signals in use by various northeastern railroads. 4. Cab signals are presented to the locomotive by means of a cab signal display unit.5. There are no intermediate wayside signals between interlockings : operation is solely by cab signal . 6. Cab signals are presented to the locomotive by means of a cab signal display unit. 7. They do not convey information about traffic in the blocks ahead-the cab signal conveys block information. 8. The leading truck of the driving trailer has brackets for mounting the cab signal receiver coils. 9. Cab signals were subsequently adopted by several other U . S . railroads, especially on passenger lines.10. Later this was amended to a simpler " stop release " button on the cab signal display.
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