What should you do before using air brakes on an incline?

Before using air brakes on an incline, it is crucial to ensure that the parking brake is engaged to prevent the vehicle from rolling backward. Engaging the parking brake creates a secure hold on the vehicle, ensuring it remains stationary on the slope while you prepare to utilize the air brakes effectively.

Air brakes are powerful but require careful management, especially on inclines where the potential for rollback is significant. If the vehicle is not secure, unintended movement can lead to loss of control, dangers to the driver and others on the road, or even damage to the vehicle. By engaging the parking brake first, you establish a baseline of safety, allowing you to then focus on using the air brakes appropriately and maintaining control of the vehicle during the descent or when stopping on an incline.