Q
109. What is emergency stab braking?
Air Brakesmedium
Aa. Gradually apply the brakes until the wheels lock up.
Bb. Brake hard, release the brakes when the wheel locks and reapply the brake when the wheels start rolling.
Cc. Apply the parking brake quickly.
Detailed Explanation
The correct answer is "b. Brake hard, release the brakes when the wheel locks and reapply the brake when the wheels start rolling.". This is based on federal CDL regulations and safety standards.
Correct Answer: b. Brake hard, release the brakes when the wheel locks and reapply the brake when the wheels start rolling.
Ready to practice for real?
Take our free, full-length Air Brakes practice test. Simulates the actual DMV exam with timed questions.
Start Practice TestRelated Questions
41. Why must air tanks be drained?
air-brakesmedium
103. When performing your air brake leak down test your engine should be turned off.
air-brakesmedium
53. When the air pressure falls to the minimum pressure allowed in the system, the governor prevents more air from escaping the air tanks.
air-brakesmedium
75. Converter dollies built on or after March 1, 1998 are required to have anti-lock brakes. These dollies will have:
air-brakesmedium
Front wheel braking works:
air-brakesmedium