Metropolitan Transportation Authority (MTA) Assistant Conductor Practice Test

When a train exceeds Medium Speed after receiving an Approach Restricting signal, it is crucial for safety and protocol that the train immediately reduces its speed to Medium Speed. This signal indicates that a train should prepare to obtain a more restrictive signal ahead, meaning that the train needs to be able to come to a stop if necessary.

Reducing to Medium Speed allows the locomotive crew to maintain control while ensuring they can respond appropriately to any upcoming signals that may require further reductions or a stop. This response is consistent with safety regulations intended to prevent accidents and ensure the smooth operation of the train system, especially in areas where decreased speed is required for safe operation. Other actions, such as continuing at the current speed or accelerating, would compromise safety and violate the protocol established for handling such signals.