AIR BRAKES CDL PRACTICE TEST - KANSAS
6.
With the controlled braking method, you:
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push down on the brake pedal as hard as you can so that the wheels the lock up.
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apply the brakes as hard as you can without locking the wheels.
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apply the brakes all the way and release brakes when the wheels the lock up.
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None of the above.
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7.
If your trailer starts to skid, you should:
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release the brakes to get traction back.
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accelerate slightly.
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keep the rear of your vehicle close to the curb.
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use the trailer hand brake (if you have one) to straighten out the rig.
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8.
Supply pressure gauges tell drivers:
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how much pressure the relay valves should send to the trailer brakes.
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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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All of the above.
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9.
In vehicles with air brakes, the brake pedal:
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controls the air pressure applied to the brakes.
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let the
air out of the spring brakes.
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tells you how much pressure is in
the air tanks.
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pumps air into the air storage
tanks.
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10.
The parking brake:
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should be used when driving in bad weather.
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should be used whenever you park.
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should be used when you need to apply the brakes firmly.
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All of the above.
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