Which term describes a method of establishing working limits on tracks not controlled by the Train Dispatcher or Block Operator by physically preventing the entry and movement of trains.

• A. Inaccessible Track
• B. Working Limits
• C. Roadway Worker
• D. Watchman/Lookout

Answer: (A)

This describes making a track inaccessible as a protective measure. When a segment of track isn’t under a Train Dispatcher or Block Operator’s control, workers establish working limits by physically blocking the entry and movement of trains. That means devices, barriers, locked switches, or other physical obstructions are placed to ensure no train can enter the work area, effectively creating a protected zone even without signal or block authority. This approach provides a clear, static safeguard for roadway workers by removing any possibility of trains entering the work site.

The other terms don’t fit this specific protection method. Working limits refer to the boundary that protects workers but don’t specify how entry is prevented. A roadway worker is the person protected, not the method. A watchman/lookout is the person who warns of approaching trains, not the mechanism used to establish the limits.