What should a train operator do if there is no acknowledgment from the tower after pressing the route request button?

The most appropriate action for a train operator when there is no acknowledgment from the tower after pressing the route request button is to report the issue immediately to the nearest dispatcher's office. In train operations, clear communication and confirmation from the control tower or dispatch are critical for ensuring safety and correct routing. If there is no acknowledgment, it indicates a potential communication failure, and the operator should not assume that the route is set up correctly.

Proceeding cautiously without confirmation could lead to conflicts with other trains on the route or compromised safety protocols. Accepting that the route is set without confirmation undermines operational safety and could result in unforeseen hazards. Additionally, contacting maintenance for assistance is not appropriate in this scenario, as the issue pertains to communication rather than mechanical failure.

Therefore, taking immediate action to seek clarification from the dispatcher is the safest approach, ensuring that the operator has the necessary confirmation to proceed without risking an unsafe situation.