What should be done if a temporary block limit is encountered?

When encountering a temporary block limit, the appropriate action is to stop and wait for authority. This procedure is rooted in safety protocols that ensure the protection of both the train crew and passengers. A temporary block limit indicates that there is a restriction on train movement within that area, often due to maintenance work, emergencies, or other operational issues.

Stopping allows the conductor to confirm their status and receive further instructions from dispatch or control centers, which will then provide the necessary authority to proceed safely. This helps prevent accidents or conflicts with other trains that might be operating under different conditions.

The other responses, such as speeding up to pass quickly or maintaining the same speed, could lead to serious safety violations and potential collisions. These options do not consider the risks associated with not verifying the current track conditions before proceeding. Calling for additional instructions is a reasonable action but typically would not provide the immediate safety assurance that stopping and waiting for authority does in the context of encountering a temporary block limit.