What indicates that an electric brake has failed?

A delay in the initial brake application is a significant indicator of a potential failure in an electric brake system. When a train operator initiates braking, the response time is crucial for safety and control. Electric brakes are designed to respond quickly to a brake signal, and any delay suggests that the system may not be functioning properly. This could indicate issues such as electrical malfunctions, sensor failures, or problems with the actuator mechanisms that control brake application.

Quick and effective braking is essential, especially in emergency situations. A delay could lead to increased stopping distances or a failure to stop in time, raising safety concerns for both passengers and crew.

In contrast, while immediate brake application, noise from the brake system, and warning light activation can also be indicators of different problems within the brake system, they do not specifically signify a failure of the electric brake in the same direct way that a delay does. Immediate application may indicate a functioning system, noise could be a result of normal operations or maintenance needs, and warning lights may pertain to various issues that are not directly tied to a failure of the electric brake itself.