What does Rule 280A indicate regarding trains with inoperative cab signals?

Rule 280A outlines the protocol for trains with inoperative cab signals, emphasizing safety as a priority when operating under these conditions. The rule specifies that such trains must adhere to a maximum speed limit of 79 MPH and proceed as indicated by signals. This is critical to ensuring that the train operates safely within established speed restrictions while compensating for the lack of in-cab signaling, which normally provides vital real-time information about track conditions and speed limits.

By enforcing a maximum speed of 79 MPH, Rule 280A helps to mitigate potential hazards that could arise from the inoperative cab signals while allowing the train to continue its journey without stopping or reverting to less efficient operating practices. This specification aligns with general safety protocols in railroad operations, reassuring that trains can still function effectively even when certain technologies fail. It balances operational efficiency with the imperative of maintaining safety on the tracks.