2026 Pennsylvania Combination CDL Practice Test 2

The driver crosses the airlines when hooking up to an old trailer. What will happen?

If the trailer has no spring brakes, you can drive away, but you will not have trailer brakes The hand valve will apply the tractor brakes instead of the trailer brakes The brake pedal will work the trailer spring brakes instead of the air brakes

Correct Answer:

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

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