What action should be taken if a train operator receives a signal to proceed?

When a train operator receives a signal to proceed, the correct action is to check for track clearance. This step is crucial to ensure that the track ahead is clear of any obstacles or other trains before moving forward. It helps to maintain safety and prevent potential accidents. By confirming that the track is clear, the operator can proceed with confidence, knowing that it is safe to do so.

While other options may seem relevant in certain contexts, they do not directly address the immediate need for safety upon receiving a signal to proceed. Stopping and awaiting confirmation would slow down operations and could cause a backlog if the signal is clear. Signaling back to the dispatcher is unnecessary if proceeding safely, as the operator already has the necessary signal to move. Consulting the timetable, while important for overall schedule adherence, does not address the immediate requirement for track safety when a proceed signal is received. Thus, checking for track clearance is the appropriate and necessary action.