Which of the following is NOT part of the PDC when preparing to drive a vehicle?

The correct option relates to the necessary checks and procedures involved in preparing to drive a vehicle, particularly from the perspective of emergency vehicle operation. The PDC, or Pre-Drive Check, is essential for ensuring that the vehicle is in a suitable condition to operate safely.

Checking the air conditioning system is not generally included in the essential pre-driving checks. While a functioning air conditioning system can enhance passenger comfort, it does not directly impact the safety and operational readiness of the vehicle. The primary focus of the PDC should be on critical aspects that ensure the vehicle can be driven safely and effectively in emergency situations.

On the other hand, checking the handbrake and putting it in neutral, conducting a static brake test, and following the starting procedure are vital steps in the PDC. These checks help confirm that the vehicle is mechanically sound, that the braking system is functional, and that the vehicle is ready to be driven without malfunction, which is crucial for emergency responsiveness.