When a train or employee holds joint authority with another employee, occupancy of overlapping limits is allowed only after which condition?

• A. The Overlapping Limits May Be Entered After A Five Minute Wait
• B. The Overlapping Limits May Be Entered Only With Dispatcher Permission
• C. Overlapping Limits Are Always Closed
• D. Working Limits Described And Permission To Enter From Listed Employee Or Dispatcher Advised Clear

Answer: (D)

When two employees share joint authority, you can only occupy overlapping limits if both key safety steps are completed. First, the working limits must be described, so everyone knows exactly which tracks and boundaries are involved. Then you must receive explicit permission to enter from the listed employee or the dispatcher, and that permission must be advised clear. This two-part requirement ensures there’s a shared understanding of the exact limits and a clear authorization before anyone enters the overlap, preventing conflicts or miscommunication between crews.

The other options miss one or both of these safeguards. Waiting a fixed time isn’t a recognized safety trigger, dispatcher permission alone doesn’t guarantee the limits are properly described, and saying limits are always closed would impractically prevent movement. The precise rule is that both the description of the working limits and the advised-clear permission to enter must be in place.