While passing a detector that transmits a hotbox message, when will the engineer be required to stop the train in response to the hotbox detector actuation?

While passing a detector that transmits a hotbox message, when will the engineer be required to stop the train in response to the hotbox detector actuation?

• A. Stop the train immediately and inspect for dragging equipment.
• B. Continue.
• C. Stop only at the next yard.
• D. Slow to 5 mph.

Answer: (A)

Hotbox detectors monitor bearing temperatures in real time, and when a detector flags a hotbox condition it signals a potential overheated bearing or dragging equipment. The safest, correct action is to stop immediately to inspect the train and address the issue before continuing. Delaying the stop by waiting until a yard or just slowing down does not promptly address the hazard and could lead to a derailment. So stop at once and inspect for dragging equipment or other bearing problems.

Hotbox detectors monitor bearing temperatures in real time, and when a detector flags a hotbox condition it signals a potential overheated bearing or dragging equipment. The safest, correct action is to stop immediately to inspect the train and address the issue before continuing. Delaying the stop by waiting until a yard or just slowing down does not promptly address the hazard and could lead to a derailment. So stop at once and inspect for dragging equipment or other bearing problems.