What action should be taken when the seal on an emergency release is broken and communication with the control operator has failed?

When the seal on an emergency release is broken and communication with the control operator has failed, permitting a train to leave the main track is the correct action to take based on safety and operational protocols.

In emergency situations, the primary concern is to ensure safety. If communication with the control operator has failed and the seal is broken, it indicates a potential problem that requires immediate and decisive action. Allowing a train to leave the main track may be necessary to prevent blockage or risk of collision, especially if the situation has escalated to an emergency where the standard procedures cannot be followed due to lack of communication.

The other options do not align with the urgency and necessity for action in this scenario. Notifying the control operator would be ideal, but since communication has failed, that course is rendered ineffective. Waiting for 10 minutes introduces unnecessary risk and delays action that may be critical. Breaking the seal without authorization undermines established protocols and could lead to negative consequences. Thus, taking the action of permitting a train to leave the main track prioritizes safety amid communication issues and a broken seal.