ND CDL AIR BRAKES PRACTICE TEST
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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the North Dakota CDL knowledge test. The ND CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the North Dakota CDL Manual. Take this ND CDL practice test now to prepare for the actual air brakes test!
1.
Which of the following is NOT correct? An ABS system:
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is a safety anti-skid braking system.
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reduces the braking pressure to a safe level.
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helps you stop faster.
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helps you avoid wheel lock up.
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2.
The Johnson bar is a valve that:
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works the trailer brakes.
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reduces the braking pressure to a safe level.
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keeps air from going out if the air compressor develops a leak.
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is installed in the first tank the air compressor pumps air to.
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3.
Supply pressure gauges tell drivers:
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how much pressure is in the air tanks.
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how much air pressure they are applying to the brakes.
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how much pressure the relay valves should send to the trailer brakes.
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All of the above.
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4.
Which of the following is TRUE about dual air brake systems?
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A dual air brake system has 2 separate air brake systems.
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most heavy-duty vehicles use dual air brake systems.
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Each brake system has its own air tanks, hoses and lines.
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All of the above.
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5.
If your truck catches fire, the first thing you should do is to:
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get off the vehicle, open the hood and start shooting foam to keep the engine cool.
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pull into a service station and call for help.
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pull off the road and park in an open area.
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get the vehicle off the road and park near other vehicles.
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