What is the purpose of Track Warrant Control (TWC)?

Track Warrant Control (TWC) is primarily designed as a method to authorize train movements over specified sections of track. It provides a framework within which train crews receive permission to occupy and travel on tracks, ensuring safe and efficient operation in areas where multiple trains may be present. By using TWC, dispatchers can issue warrants that give operators clear instructions and limits, reducing the risk of collisions and ensuring that trains only travel where they are permitted.

The other options do not accurately reflect the function of TWC. For instance, while overheated journals may be monitored for safety purposes, TWC does not serve this function. Similarly, TWC does not pertain to car storage in yards or solely focus on communication guidelines among crew members. By concentrating on the authorization of movements, TWC is crucial for maintaining safe railroad operations.