What is the requirement if both ditch lights fail en route?

When both ditch lights fail while en route, the train must proceed at no more than 20 MPH over public crossings until the first repair point. This requirement is crucial for maintaining safety and visibility at crossings where obstruction by other vehicles and pedestrians is a concern. Ditch lights are designed to illuminate the area near the track and enhance the train's visibility to others, particularly at grade crossings.

By limiting the speed to 20 MPH in such situations, the train crew can ensure that they have ample time to react to any potential hazards or obstacles that may be present at crossings. This speed restriction provides a balance between ensuring the train continues its journey to a point where repairs can be made and implementing necessary safety measures to protect the public and the train crew.

In contrast, proceeding at normal speed or without any speed limit would increase the risk of accidents, potentially endangering both the train occupants and people on the ground. Stopping the train and waiting for repairs is generally not practical unless the situation poses immediate danger, as it can lead to unnecessary delays and operational disruptions. Therefore, the measured approach of lowering the speed to 20 MPH strikes a necessary balance between continued operation and safety.