What does the abbreviation TWC refer to in railroad terminology?

The abbreviation TWC stands for Track Warrant Control. This is a system used in railroad operations to grant authority to trains for movement over particular sections of track. In Track Warrant Control, a train crew receives a track warrant from the dispatcher, which outlines the specific limits within which the train is authorized to operate. This system is crucial for maintaining safety, as it helps prevent train collisions and ensures that all movements on the railroad are properly coordinated and controlled.

Understanding Track Warrant Control is vital for railroad personnel, as it enables efficient and safe train operations on busy rail networks. It provides a structured way to manage train movements, especially in areas where multiple trains may be operating concurrently, thus reducing the risk of accidents and ensuring compliance with operational protocols.