When making reverse movements, what is the required speed on main track or controlled siding?

When making reverse movements on the main track or controlled siding, the required speed is restricted speed. This means that the train must proceed cautiously, limited to a speed that allows it to stop within half the range of vision. This practice is crucial for maintaining safety, as it minimizes the risk of collisions or accidents when the train is moving in the opposite direction of normal traffic.

Restricted speed allows crew members to be more vigilant and react quickly to any hazards that may arise in their path. It also ensures that the train can be stopped promptly if necessary, given the potential for obstructions or other trains on the track. Understanding this concept is essential for conducting safe operations, particularly in complex rail yard environments or when dealing with track switches and crossings.