What is the purpose of chocking the wheels during an air brake inspection?

Chocking the wheels during an air brake inspection serves the crucial purpose of preventing accidental movement of the vehicle. When the air brakes are released, there is a possibility that the vehicle could roll, especially if it is on an incline. Chocking the wheels ensures that the vehicle remains stationary and stable while the inspection is performed. This safety measure protects both the inspector and the vehicle itself from potential accidents that could occur from unintended movement during the inspection process.

While improving traction, balancing the load, and checking air pressure are all important aspects of operating and maintaining vehicles with air brakes, they do not address the critical safety concern of maintaining control over the vehicle's movement during inspections. Thus, the primary reason for chocking the wheels is to establish a safe working environment while the brakes are being examined.