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UPGRADE TO CDL PREMIUM
1.
The safety valve is usually set to open at:
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200 psi.
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100 psi.
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150 psi.
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2.
After an accident, an improper use of flares could cause:
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air pressure to build from 50 to 100 psi within 2 minutes.
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a fire if spilled fuel is on the ground.
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the springs to put on the brakes.
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3.
ABS (Anti-lock Braking System):
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is an addition to your normal brakes.
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keeps your wheels from locking when you apply the brakes hard.
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All of the above.
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4.
Crossover mirrors are used to:
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monitor passenger activity inside the bus.
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see the "danger zone" areas in front of the bus and to the left and right side of the bus.
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monitor the left and right sides of the bus at a wide angle.
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5.
In vehicles with air brakes, the air compressor governor:
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controls how much air the air compressor will pump into the air storage tanks.
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controls when the air compressor will pump air into the air storage tanks.
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controls when the air storage tanks will pump air into the air compressor.
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6.
ABS:
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helps you increase your average speed.
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does not decrease your stopping distance.
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helps you increase your following distance.
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7.
If your bus gets stuck on a railroad track, you should:
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keep students on the bus and contact your dispatcher to explain the situation.
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lead students as far away from the tracks as possible, in the direction of any oncoming train.
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lead students across the tracks, and have them stand at least 100 feet off tracks.
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8.
The brake and accelerator interlock system (if your bus has one):
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is used to shut the air off and put on the trailer emergency brakes.
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applies the brakes when the rear door is closed.
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should never be used in place of the parking brake.
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9.
If a worker is close to the roadway in a work zone, you should:
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reduce your speed below the posted speed limit.
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pull off the road and stop.
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drive at the posted speed limit.
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10.
When unloading students, you should:
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have the students remain seated until told to exit.
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invite the students to head toward the door while the bus is still moving.
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get off the bus and stand right next to it.
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