MN CDL AIR BRAKES PRACTICE TEST
6.
Before driving a vehicle with a dual air system, the air compressor should build up a minimum of _____ pressure in both the primary and secondary systems.
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100 psi
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50 psi
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75 psi
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10 psi
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7.
When backing a trailer, you should:
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turn the steering wheel in the direction you want to go.
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never make pull-ups to reposition your vehicle.
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try to position your vehicle so you can back in a straight line.
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avoid correcting the drift.
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8.
You can be sure that your vehicle is equipped with ABS:
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if the vehicle was manufactured after 2000.
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if the vehicle was manufactured after 1998.
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if your company requires the use of antilock brakes in its policies.
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if the vehicle was manufactured after 2010.
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9.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; less
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greater; more
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less; more
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greater; less
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10.
What is a dual air brake system?
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2 separate air brake systems: one system operates the front brakes, the other system operates the rear brakes.
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2 separate air brake systems: one system for daytime driving, the other system for nighttime driving.
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2 separate air brake systems: one system operates the left brakes, the other system operates the right brakes.
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None of the above.
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