DC CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
11.
Which of the following is NOT checked in a pre-trip inspection?
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Cargo securement
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Safety equipment
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Brake controls
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The amount of fuel in the vehicle
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12.
If you see a cardboard box ahead in your lane, you should:
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avoid it without making sudden, unsafe moves.
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stop, get out of your vehicle, and pull the box off of the road before driving on.
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slow down to a crawl, inch your vehicle forward and attempt to nudge the box out of your way.
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None of the above.
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13.
The heavier the vehicle:
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the higher the center of gravity will be.
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the less work the brakes must do to stop it.
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the more work the brakes must do to stop it.
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None of the above.
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14.
The earliest way to recognize that your trailer has started to skid is:
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by hearing squeaking noises from the wheels.
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by checking your mirrors.
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by checking the jackknife sensor.
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by releasing the brakes.
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15.
To test the service brake:
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gently try to pull forward with the trailer parking brake on, then release the brake.
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push the brake pedal firmly while going about 5 mph.
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push the brake pedal firmly while slowly moving backward.
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shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
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16.
Why should you be in the proper gear before starting down a hill?
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gravity can cause the speed of your vehicle to increase.
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it will help you go faster when you reach the bottom of the hill.
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changing gears on a hill is illegal.
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it will help the vehicle be more stable while turning.
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17.
To avoid being blinded by the high beams of an oncoming vehicle:
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watch the sidelines when someone coming toward you has very bright lights on.
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look at the right side of the road.
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don't look directly at bright lights when driving.
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All of the above.
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18.
ABS:
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allows you to brake harder.
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is an addition to your normal brakes.
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should only be used on dry roads.
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replaces your normal brakes.
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19.
If a vehicle is equipped with ABS, when you start the engine:
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the trailer emergency brakes will come on.
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the wheels will lock up.
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the ABS indicator light on the dash should come on and then turn off.
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the spring brakes will come on.
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20.
When should you downshift automatic transmissions?
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When going down grades
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When you use the brake pedal
during normal driving
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When going around curves
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When going up steep grades
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