What is required when making a reverse move in the East River tunnel?

When making a reverse move in the East River tunnel, it is essential to obtain verbal permission from the Console Operator. This requirement is in place to ensure safety and operational efficiency within the tunnel, as reverse movements can pose significant risks if not properly coordinated. The Console Operator monitors train movements and conditions in the tunnel, enabling them to provide the necessary oversight and confirmation before a train can proceed in reverse. This process helps to prevent potential collisions or other accidents in a confined and busy area like the East River tunnel.

Other options do not align with the established protocols for conducting reverse moves. For instance, written permission from the dispatcher may not be practical for immediate operations, as it does not address the need for real-time communication. Automatic signal indications may guide train movements but do not account for the unique safety measures required when reversing. Lastly, operating without permission contradicts the operational rules designed to ensure safety in complex environments such as tunnels.