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How does controlled braking differ from stab braking?
- A.Controlled braking uses only the parking brake
- B.Stab braking never allows the wheels to lock at all
- C.The two methods are identical in every respect
- D.Controlled braking applies the brakes as hard as possible without locking the wheels and holds that steady pressure, while stab braking fully applies and then releases in cycles
Correct answer
D. Controlled braking applies the brakes as hard as possible without locking the wheels and holds that steady pressure, while stab braking fully applies and then releases in cycles
Why
Both methods try to use maximum grip in an emergency without ABS, but they manage the lockup point differently. A driver who can feel and hold the threshold uses controlled braking, while stab braking corrects each lockup as it happens.
Manual topic: Air Brakes - Stab Braking · From the Air Brakes practice bank (AB-242).