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UPGRADE TO CDL PREMIUM
1.
The stop light switch:
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tells you when you need to use your parking brake instead of the service brake.
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turns on the brake lights when you put on the air brakes.
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warns you when the air supply pressure drops below 55 psi.
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should be used to fend off tailgaters.
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2.
The ________ brake system applies and releases the brakes when the driver uses the brake pedal during normal driving.
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emergency
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anti-lock
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parking
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service
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3.
Tar in the road pavement rising to the road surface in very hot weather:
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does not affect the road surface or driving conditions.
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causes the road to become very slippery.
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is very sticky and will slow down your vehicle.
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might get in your engine.
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4.
To test the air leakage rate, with a fully-charged air system you should ____________ and time the air pressure drop.
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turn off the engine, release the parking brake
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check the air compressor's drive belt, chock the wheels
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release the parking brake, leave the engine running
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put alcohol into the air system, run the engine at a fast idle
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5.
If are being followed closely, you should:
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increase your following distance.
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change lanes quickly.
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flash your brake lights.
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decrease your following distance.
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6.
Before transporting sealed loads, you should check that:
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the load can be inspected.
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the load is properly secured.
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the seal numbers match the placard numbers.
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All of the above.
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7.
After starting the engine, oil pressure should rise to a normal level:
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within 3 miles.
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within seconds.
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within 2 minutes.
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within 6 minutes.
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8.
Front brake limiting valves were used to:
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reduce your speed so further braking or shifting is not required.
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reduce exhaust emissions.
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prevent overheating of the front tires.
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reduce the chance of the front wheels skidding on slippery surfaces.
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9.
If the drive wheels begin to spin when accelerating, you should:
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continue to accelerate.
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brake gently.
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set the parking brake.
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take your foot off the accelerator.
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10.
When driving in a construction zone, if a construction worker is near the road, you should:
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come to a complete stop.
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speed up.
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further reduce your speed.
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maintain a constant speed.
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