DISTRICT OF COLUMBIA CDL PRACTICE TEST - GENERAL KNOWLEDGE
11.
Which of the following statements about engine overheating is true?
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Low speeds create more heat for the engine.
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You should never remove the radiator cap or any part of the pressurized system until the system has cooled.
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You should never shut off an overheated engine until it cools.
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None of the above.
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12.
Which of the following statements about slippery roads is true?
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Shady parts of the road provide better traction than open areas.
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The road will freeze before bridges will.
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On a wet road you should reduce speed by a half or more.
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None of the above.
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13.
After starting the engine, you are looking at the oil pressure gauge. Oil pressure should come up to normal within:
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seconds.
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2 minutes.
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10 minutes.
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5 minutes.
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14.
To test the service brakes, pull forward at about _____ and apply the brakes firmly using the brake.
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35 mph
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5 mph
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15 mph
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10 mph
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15.
When approaching a vehicle as part of a pre-trip inspection, the driver should look under the vehicle for all of the following except:
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Grease
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Windshield wiper fluid
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Fresh oil
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Coolant
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16.
You should be especially alert for drunk drivers:
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in the early evening.
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in the morning.
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around shopping areas.
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late at night.
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17.
When should you sound your horn?
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When you are about to change lanes.
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When you are being tailgated by an aggressive driver.
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When steering around an obstacle.
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When using your horn can help avoid an accident.
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18.
You can determine if your vehicle is equipped with ABS (anti-lock braking system) by:
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checking for a yellow ABS malfunction lamp on the instrument panel.
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looking for wheel speed sensor wires coming from the rear of your brakes.
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checking if your vehicle was manufactured after March 1, 1998.
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All of the above.
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19.
It is important to shift gears correctly to keep:
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the engine cool.
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control of the vehicle.
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the engine warm.
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the engine oil flowing.
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20.
A cardboard box on the road:
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may contain some solid material capable of causing damage.
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is likely to be empty and should not be considered a hazard.
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will never damage vehicle parts if driven over.
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should always be driven over to avoid sudden direction changes.
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