What indicates a valid permit for vehicle operation at YYZ?

A valid GTAA sticker is a clear indicator of authorization for vehicle operation at YYZ. This sticker ensures that the vehicle has met all necessary safety and operational standards set by the Greater Toronto Airports Authority (GTAA). It signifies that the operator has received the proper training and has been issued the appropriate permits for airside activities, allowing them to navigate and operate within restricted areas of the airport.

In contrast, while a valid driver's license indicates that an individual is legally allowed to drive, it does not confirm their specific training or authorization to operate a vehicle on the airside of an airport. Similarly, a company ID badge and a vehicle registration card do not provide direct evidence of training or permit issuance required for compliance with airside regulations. Therefore, the GTAA sticker is the most relevant and recognized proof of a valid permit within the YYZ airside operations context.