MN 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 Minnesota CDL knowledge test. The MN 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 Minnesota CDL Manual. Take this MN CDL practice test now to prepare for the actual air brakes test!
1.
The ________ brake system applies and releases the brakes when the driver uses the brake pedal during normal driving.
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parking
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emergency
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service
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anti-lock
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2.
You are going down a steep grade. Once the vehicle is in the proper low gear, you should brake just hard enough to feel a slowdown, and then release the brakes when your speed has been reduced to ____ below your safe speed.
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15 mph
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20 mph
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10 mph
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5 mph
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3.
If you are being tailgated, you should:
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drive on the shoulder.
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speed up.
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turn on your taillights.
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try to let the other vehicle pass.
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4.
The air brake lag distance at 55 mph on dry pavement adds about:
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32 feet.
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75 feet.
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60 feet.
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16 feet.
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5.
The posted speed limit:
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may only be exceeded when driving in rural areas.
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should only be exceeded when passing other vehicles.
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is only a suggestion.
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should never be exceeded.
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