What mode is indicated by the term "MCS" in train hold removal?

The term "MCS" in the context of train hold removal stands for "Movement Control System." This system is crucial in managing the movement of trains within a rail network, ensuring that they operate safely and efficiently. The Movement Control System provides real-time information regarding train positions, speeds, and signal statuses, allowing for timely and appropriate responses to any changes that might affect train operations.

In train hold removal specifically, the Movement Control System can issue commands to release a train from a hold status, ensuring that the train can proceed safely based on current operational conditions. Understanding this system is vital for engineers and operators who need to coordinate the safe movement of multiple trains, particularly in congested or complex rail environments.

The other terms listed refer to various systems, but they do not align with the primary function of coordinating train movements in the context of holds and removals.