If the dynamic brakes fail on the lead controlling locomotive en route, the movement may continue if:

If the dynamic brakes fail on the lead controlling locomotive en route, the movement may continue if:

• A. The engineer or other qualified employee determines the train is safe to move
• B. The movement must be halted immediately
• C. The train can proceed at restricted speed regardless
• D. The alerter is reset

Answer: (A)

When a braking subsystem on the lead locomotive fails, the movement can continue only if a qualified person, typically the engineer, determines that it is safe to do so. This hinges on ensuring that the train still has adequate braking capability through the air-brake system and that speed, stopping distance, and control can be managed under the current conditions (grade, track, signals, etc.). The engineer or another qualified employee must assess and authorize proceeding, confirming that safe operation remains possible despite the dynamic brake failure. Resetting an alerter or insisting on a universal restricted-speed rule doesn’t address the actual safety assessment needed for continued movement. Halting immediately isn’t required if a competent authority determines there’s still safe braking and control.

When a braking subsystem on the lead locomotive fails, the movement can continue only if a qualified person, typically the engineer, determines that it is safe to do so. This hinges on ensuring that the train still has adequate braking capability through the air-brake system and that speed, stopping distance, and control can be managed under the current conditions (grade, track, signals, etc.). The engineer or another qualified employee must assess and authorize proceeding, confirming that safe operation remains possible despite the dynamic brake failure.

Resetting an alerter or insisting on a universal restricted-speed rule doesn’t address the actual safety assessment needed for continued movement. Halting immediately isn’t required if a competent authority determines there’s still safe braking and control.