What is the order of priority for Right-of-Way on the airside?

The correct answer reflects the established order of priority for Right-of-Way on the airside at Vancouver International Airport (YVR), which is critical for maintaining safety and efficiency among various activities occurring in this busy environment.

Aircraft are given the highest priority because they are the largest and most critical vehicles operating on the airside. When an aircraft is moving, it must be allowed to proceed without obstruction to ensure safe takeoff and landing operations. Following aircraft, vehicles that are exiting controlled surfaces are prioritized. This is important as these vehicles need to safely navigate away from active runway and taxiway areas where aircraft might be operating. The prioritization extends to Emergency Response Services (ERS), which must have the ability to respond quickly in case of incidents, thereby further emphasizing the need for operational clarity and adherence to Right-of-Way rules.

Understanding this order of priority is vital for all personnel operating on the airside, as it helps in preventing accidents and ensures that emergency responses can be executed seamlessly without delays caused by other vehicles. The other options do not align with this established hierarchy, indicating that they would not provide the same level of operational safety and efficiency as the correct choice does.