14. In normal driving, some drivers use the hand valve before applying the brake pedal to prevent a jackknife. Which of these statements is true?

Combination Vehiclesmedium

AIf the trailer has no spring brakes, you can drive away, but you will not have trailer brakes.

BThe brake pedal will work the trailer spring brakes instead of the air brakes.

CThe hand valve will apply the tractor brakes instead of the trailer brakes.

Detailed Explanation

The correct answer is "If the trailer has no spring brakes, you can drive away, but you will not have trailer brakes.". This is based on federal CDL regulations and safety standards.

Correct Answer: If the trailer has no spring brakes, you can drive away, but you will not have trailer brakes.

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14. In normal driving, some drivers use the hand valve before applying the brake pedal to prevent a jackknife. Which of these statements is true?

Detailed Explanation

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Related Questions

68. Combination vehicles are usually heavier, longer, and require more driving skill than single commercial vehicles.

All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).

If a trailer begins to skid, the driver should:

When entering or crossing traffic while driving a combination vehicle, it is especially important that you:

2. You should not back a tractor under a trailer until the whole air system is: