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

• A. Foul Time
• B. Inaccessible Track
• C. Working Limits
• D. Inaccessible Track

Answer: (D)

This item tests protection when work is done on tracks not under the dispatcher’s control by physically blocking access. Inaccessible Track describes making a track off-limits through physical barriers so trains cannot enter or move on it. This provides a clear, enforceable safety boundary because trains are prevented from using that section regardless of signaling or authority on the adjacent tracks. Foul Time is a time-based restriction rather than a guaranteed physical block, Working Limits refer to the area where work occurs without specifying how entry is blocked, and the term implies a general condition of the track rather than the actual physical prevention. So, the concept of physically preventing entry to establish the working limits on such a track is best captured by Inaccessible Track.