GENERAL KNOWLEDGE CDL TEST DISTRICT OF COLUMBIA - PRACTICE TEST
41.
Which of these statements about using your mirrors is FALSE?
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You should use your mirrors to spot overtaking vehicles.
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There are blind spots that your mirrors cannot show you.
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When driving, you should check mirrors regularly to know where other vehicles are around you.
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None of the above.
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42.
Combination vehicles usually require _________ single commercial vehicles.
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the same level of skill as
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less driving skill than
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more driving skill than
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None of the above.
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43.
Before transporting sealed loads, you should check:
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a small sample of whatever is inside.
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that you don't exceed gross weight and axle weight limits.
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the special transit permit.
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None of the above.
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44.
If a load is placed on one side of the trailer:
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making turns may be easier.
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your brakes won't work.
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the steering axle weight will be too light to steer safely.
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a rollover is more likely.
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45.
What is the most important reason for doing a vehicle inspection?
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It's required by law.
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To avoid fines.
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Liability insurance.
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Safety for yourself and for other road users.
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46.
Unless excepted, shipping papers must list:
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a proper description of the truck.
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an emergency response telephone number.
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the colors of the materials.
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the address of the driver.
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47.
If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you have?
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5 seconds
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4 seconds
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2 seconds
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3 seconds
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48.
If you get stuck on railroad tracks, you should:
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get out of the vehicle and away from the tracks.
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stay in the vehicle and call for help.
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have a helper push your vehicle.
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check the engine compartment quickly.
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49.
In coming down a long, steep downgrade, which of the following is NOT a factor you should consider to select an appropriate safe speed?
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Your schedule
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Road conditions
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Weather
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Steepness of the grade
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50.
To make an emergency using the stab braking method, you should:
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apply firm pressure to the brake pedal and hold for 6 seconds, then pump the pedal three times.
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apply the brakes as hard as you can without locking the wheels.
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fully apply the brakes until the wheels lock up, then stay off the brake until the vehicle has slowed down.
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apply your brakes all the way, release the brakes when the wheels lock up, and apply the brakes again as soon as the wheels start rolling.
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