What must a control operator include when authorizing a train to occupy a track under Track and Time conditions?

When a control operator authorizes a train to occupy a track under Track and Time conditions, it is crucial to include both the track designation and a time limit, or the phrase "until released." This comprehensive information ensures that all parties involved understand the specific track being occupied and the duration of that authorization.

The track designation identifies the exact section of the track in question, which is vital for maintaining safe operations and preventing collisions or misunderstandings among train crews. The time limit or the indication "until released" communicates how long the authorization is valid, which is important for coordinating train movements and ensuring that other trains do not inadvertently enter the same track space during that time. This careful communication is foundational to maintaining safety protocols and operational efficiency on the railroad.

In contrast, simply providing the track number would lack critical details, while stating signal indications alone would not fulfill the requirements for Track and Time conditions. A verbal confirmation from a crew member, although useful in certain circumstances, does not replace or fulfill the necessity of formally designating the track and outlining the time constraints.