What does a critical light with a unit light and brakes out indicate?

A critical light illuminating alongside a unit light and brakes out is indicative of a significant issue regarding the braking system of the specified car number. This combination of warning signals is designed to alert operators and maintenance personnel that there is a failure in the brakes, which is a critical safety concern in any vehicle system, especially in transport scenarios.

When the brake system fails, it can compromise the safety and operability of the vehicle, making it vital for personnel to address the fault immediately. The triggering of the critical light serves as a direct communication from the vehicle's diagnostic system, emphasizing the urgency and seriousness of the braking issue. This ensures that proper measures can be taken to rectify the fault before the vehicle is put back into operation.

Maintaining a clear understanding of such signals is essential for all personnel involved in monitoring and operating train systems, particularly in emergency situations where safe stopping mechanisms are critical.