Illinois CDL Combination Test 1

To test the trailer service brakes, you should:

Move the vehicle forward slowly and apply the brakes with the brake pedal. Reverse the vehicle slowly and apply the brakes with the hand control. Reverse the vehicle slowly and apply the brakes with the brake pedal. Move the vehicle forward slowly and apply the brakes with the hand control.

Correct Answer:

Move the vehicle forward slowly and apply the brakes with the hand control.

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