Semi-Truck or Big-Rig Drivers (CDL) General Knowledge Test | Drivers License Practice Tests

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When making emergency stops with air brakes and using the stab braking method, you should:

Press hard on the brake pedal and apply full hand valve until the vehicle stops.

Pump the brake pedal rapidly and lightly.

Brake hard until the wheels lock, then get off the brakes as long as the wheels are locked.

Brake as hard as you can, get off the brakes when the wheels lock, push brakes when the wheels roll again.