If the headlight and all auxiliary lights fail, or if the headlight fails on Bombardier cab cars, regardless of the condition of the auxiliary lights, the train may operate only to the next forward location where repairs can be made. The RTC must be notified immediately and ?
A white light must be substituted in the cab window
The engine bell if equipped, must be sounded continuously
The engine horn must be sounded frequently
Train must stop and warn at all public and private highway grade crossings.