CDL COMBINATION PRACTICE TEST DISTRICT OF COLUMBIA
11.
If you are being tailgated, you should:
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turn on your taillights.
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drive on the shoulder.
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try to let the other vehicle pass.
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speed up.
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12.
After starting the engine, oil pressure should rise to a normal level:
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within 6 minutes.
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within 2 minutes.
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within seconds.
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within 3 miles.
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13.
When more cargo is piled up in a truck, the truck becomes easier to turn over. Fully loaded rigs are _________ to roll over in a crash than empty rigs.
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five times more likely
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ten times more likely
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less likely
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three times more likely
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14.
Which of the following makes a rollover more likely?
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Keeping the cargo as close to the ground as possible
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Driving quickly around turns
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Driving slowly around turns
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Keeping the load centered on your rig
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15.
When checking your tires during a pre-trip inspection, which of the following is acceptable?
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Mismatched sizes
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Tires made by different manufacturers
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Cracks in the tires
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Dual tires that come in contact with parts of the vehicle
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16.
A burning tire must be:
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immediately removed from the vehicle.
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covered with cloth.
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cooled with water.
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None of the above.
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17.
Dollies with ABS are required to have a malfunction lamp:
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on the rear.
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on the front.
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on the left side.
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on the right side.
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18.
How do you find out how many seconds of following distance you have?
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Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
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Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
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None of the above.
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19.
If you get stuck on the railroad tracks, the first thing you should do is:
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try to move your vehicle until you see the train.
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stay in your vehicle and call 911.
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immediately get out of the cab and move away from the tracks.
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scream for help.
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20.
Axle weight is:
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the weight of all the axles added together.
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the weight transmitted to the ground by one axle or one set of axles.
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the value specified by the manufacturer as the loaded weight of one axle.
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the maximum safe weight your tires can carry at a specified pressure.
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