What is the protocol if a vehicle or person needs to cross a runway?

The correct protocol when a vehicle or person needs to cross a runway is to obtain clearance from air traffic control before crossing. This is essential for maintaining safety on the airside of an airport, where operations involving aircraft are conducted. Air traffic control is responsible for managing the safe and orderly movement of all aircraft and vehicles in this area. By securing clearance, the operator is ensuring that the runway is clear of all aircraft and that it is safe to proceed.

This protocol helps prevent incidents that could occur if a vehicle or person were to cross a runway without proper authorization, as it allows for coordination with air traffic operations and ensures that all parties are informed about the situation. The potential risks associated with crossing a runway without ATC clearance can lead to serious accidents involving aircraft and ground vehicles or pedestrians.

The other options suggest actions that could compromise safety and operational integrity. For example, crossing without stopping disregards the need for situational awareness and permission from air traffic control, while waiting for a guide assumes that this is an accepted practice, which may not always be the case. Assuming safety without verification can lead to dangerous scenarios, emphasizing the importance of following proper protocols.