What is the maximum speed a train may operate over rough track or dip when other routes are unavailable?

The maximum speed a train may operate over rough track or dip when other routes are unavailable is established based on safety considerations and equipment limitations. A limit of 10 mph is specified to ensure that the train can navigate the affected track section safely while minimizing the risk of derailment or damage to the equipment.

This speed allows crews to maintain control and respond to any potential issues that may arise due to the uneven or unstable conditions of the track. By adhering to this maximum speed, the integrity of the train, as well as the safety of passengers and crew, is prioritized without completely halting operations in cases of track issues.

In scenarios where trains must operate under these specified conditions, guidelines are provided to ensure the speed limit is both practical and secure, which reinforces the rationale behind setting this particular speed.