Air Brake (Q Endorsement) Practice · Question
Scenario 253: Stab braking refers to:
On non-ABS vehicles, stab braking — full application, release if wheels lock, then re-apply — helps maintain control. The correct answer is "Fully applying and
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Question: Scenario 253: Stab braking refers to:
Answer options:
- Continuously pressing the brake hard ✅ Fully applying and releasing the foot brake to control a skid on a vehicle WITHOUT ABS
- Pumping lightly
- Using only the hand valve
Correct answer: Fully applying and releasing the foot brake to control a skid on a vehicle WITHOUT ABS
Explanation: On non-ABS vehicles, stab braking — full application, release if wheels lock, then re-apply — helps maintain control. The correct answer is "Fully applying and releasing the foot brake to control a skid on a vehicle WITHOUT ABS". This capacity-fill scenario 253 reinforces the same competency for the airbrake bank and follows the certified explanation standard.
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