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General Knowledge Practice Question 7

RequiredGeneral Knowledge · Question 7

Stab braking means:

• AA single hard application followed by coasting
• BApply brakes fully, release when wheels lock, reapply when wheels start rolling
• CPumping brakes with light pressure
• DUsing engine brake exclusively

Correct answer: B. Apply brakes fully, release when wheels lock, reapply when wheels start rolling

Why: Stab braking applies brakes hard enough to lock the wheels, then releases briefly until they spin again, then reapplies. Used only on vehicles without ABS to maintain steering.

How this question fits the General test

FMCSA requires General Knowledge competency under 49 CFR 383.111 because every CDL holder operates a heavy vehicle in mixed traffic where situational judgment, pre-trip discipline, and emergency response routinely separate a safe trip from a fatal one.

Study technique for this topic

Read the FMCSA Model CDL Manual Section 2 cover to cover, then re-read it focused on numbers — speeds, distances, weights, and pressures. Use the practice questions in this category to drill those numeric thresholds until you can answer without hesitation.

Related General practice questions

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• Q60. When checking tires during a pre-trip, minimum tread depth on steer tires is:
• Q9. You should turn off your engine retarder when:
• Q22. A second DUI conviction in a CDL results in:

Continue your CDL preparation

The General Knowledge portion of the CDL knowledge exam covers more than this single question. Use this site's full General Knowledge bank to drill every topic, then test yourself with one of our state-specific practice sets to confirm you are ready for the actual DMV exam in your state. Always check your state's CDL handbook for any local addenda before the test day.

If you are still building your overall CDL foundation, start with the General Knowledge bank — every CDL applicant must pass it — and then work outward to the endorsements you plan to add.