What should be done after operating a switch before making any movements?

When operating a switch, it is crucial to ensure that the switch is secured from unintended movement. This aspect is vital for maintaining safety on the railway. After a switch has been thrown to allow a train to move in a particular direction, confirming that the switch is in the correct position helps prevent derailments or collisions that could occur if a train is directed onto a track that is not intended for its movement.

This process involves physically checking and locking the switch if necessary, ensuring that it cannot be inadvertently moved by external factors or unauthorized personnel. By securing the switch, operators create a safer environment for train operations, thereby protecting both the crew and the passengers.

Other actions, although important in different contexts, do not specifically address the immediate concern following the operation of a switch itself. For example, checking that signals are clear, communicating with the dispatcher, or visually inspecting the track ahead are steps that may follow after ensuring the switch is properly secured.