What action must be taken when a train makes a *facing point movement* at a switch, if equipped?

When a train makes a facing point movement at a switch, it is essential to lock the switches that are equipped with a lock. This action is crucial for ensuring the safety and integrity of the operation, as it prevents any unintended movement of the switch that could lead to a derailment or mishap. Locking the switch secures it in the position intended for the train's path, ultimately safeguarding the train and its crew.

The practice of locking switches is particularly important during movements where the train encounters a switch from the direction it is facing, as this can increase the risk associated with the switch position being altered after the train has passed. By locking the switch, operators mitigate this risk and contribute to the overall safety protocols that govern train operations. This process aligns with best practices in rail operations, emphasizing the need for procedural adherence to ensure the safe passage of trains.

The rationale for other options would involve considerations that either compromise safety or do not align with standard operational practices, thus reinforcing the significance of locking the switch as the proper course of action in this scenario.