DELAWARE CDL DOUBLES TRIPLES PRACTICE TEST
11.
It may not be safe to operate at legal maximum weights:
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on two-way streets.
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during bad weather or in mountains.
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on highways.
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in hot weather.
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12.
Air pressure should build up in a single air system, within about:
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10 minutes.
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15 minutes.
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1 minute.
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3 minutes.
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13.
Many large vehicles have convex (curved, "spot, "fisheye") mirrors. Convex mirrors:
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make things look smaller and farther away than they really are.
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misrepresent reality by showing a larger area than flat mirrors.
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are illegal in most states.
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None of the above.
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14.
When inspecting the coupling, how much space should there be between the upper and the lower fifth-wheel?
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None.
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It depends on the trailer
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½ inch
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It depends on the load
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15.
To know how much space you should keep in front of you:
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wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.
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estimate how many vehicle lengths there are between you and the vehicle ahead.
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estimate how many seconds it would take you to reach the vehicle ahead.
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None of the above.
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16.
When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
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50; 250
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50; 150
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100; 150
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150; 250
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17.
If a tire fails while you are driving, you should:
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brake as hard as possible.
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stop on the roadway if possible.
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stay off the brake
until your vehicle has slowed down.
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call your supervisor for instructions.
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18.
_________ rigs are much more likely to roll over in an accident than _________ rigs.
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Empty ; overloaded
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Fully loaded ; overloaded
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Empty ; fully loaded
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Fully loaded ; empty
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19.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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You should travel at the posted speed limit.
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Reduce your speed to a crawl.
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None of the above.
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20.
In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
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assume the car left the roadway and change lanes as normal.
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wait until you are sure the car isn't in your blind spot.
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ease into the other lane slowly so the other car can get out of the way.
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None of the above.
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