COLORADO CDL AIR BRAKES PRACTICE TEST
6.
To prevent rollover, you should:
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keep the cargo as close to the ground as possible.
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place the cargo near the front of the trailer.
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place the cargo near the rear of the trailer.
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put the lightest parts of the cargo under the heaviest parts.
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7.
Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
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Wheel speed sensor wires are coming from the back of the brakes.
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It was built after March 1, 1998.
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The letters "ABS" are printed on the side of the steering wheel.
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It has yellow ABS malfunction lamps.
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8.
The safety valve is usually set to open at:
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75 psi.
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150 psi.
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100 psi.
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200 psi.
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9.
To operate a vehicle equipped with air brakes, you must pass the air brakes knowledge test. Why?
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If you don't pass the air brakes test, you will be restricted to driving vehicles without air brakes.
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All trucks have air brakes.
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If you don't, you will only receive a CDL permit.
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If you don't pass the air brakes test, you can't get a CDL.
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10.
To check the slack adjusters:
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check the air hoses connected to the brake chambers to make sure they aren't cut or worn.
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Park on level ground and chock the wheels, release the parking brakes and pull hard on each slack adjuster. The slack adjuster shouldn't move more than one inch.
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park downhill and see if the vehicle rolls.
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None of the above.
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