CDL PRACTICE TEST - GENERAL KNOWLEDGE (DISTRICT OF COLUMBIA)
11.
To stay alert while driving, you should:
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avoid medications that can cause drowsiness.
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never open the window or use the air conditioner.
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rely on caffeine.
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All of the above.
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12.
Which of the following is NOT correct? An ABS system:
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helps you stop faster.
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helps you avoid wheel lock up.
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reduces the braking pressure to a safe level.
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is a safety anti-skid braking system.
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13.
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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prevent overheating of the front tires.
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reduce exhaust emissions.
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reduce the chance of the front wheels skidding on slippery surfaces.
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14.
Letting air out of hot tires:
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will help relieve the extra pressure.
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should not be done, because the pressure will be too low when the tires cool off.
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will cool the tires down.
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will have no effect on the tires.
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15.
Antilock brakes:
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help you stop faster.
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let you drive faster.
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decrease your stopping distance.
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None of the above.
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16.
If your vehicle gets stuck on the railroad tracks, you should:
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get out of your vehicle and away from the tracks.
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check for identifiable landmarks to give the location of the crossing.
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gather up your paperwork and shipping papers while calling 911, then get out of the vehicle.
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All of the above.
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17.
When inspecting your windshield, you should look for:
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dirt.
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illegal stickers.
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cracks.
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All of the above.
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18.
When transporting cargo, drivers:
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should inspect the securement of the cargo only if they see problems that could cause a crash.
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should not inspect the cargo within the first 50 miles of a trip.
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must inspect the securement of the cargo within the first 50 miles of a trip.
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must inspect the securement of the cargo within the first 150 miles of a trip.
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19.
Which of these statements is correct?
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Loose cargo can hurt the driver during a quick stop.
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Others could be hurt or killed by cargo that falls off a vehicle.
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Loose cargo that falls off a vehicle can cause traffic problems.
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All of the above.
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20.
When a tire fails, you must:
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hold the steering wheel firmly.
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get out and check all the tires after you have come to a stop.
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stay off the brake.
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All of the above.
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