CDL DOUBLES TRIPLES PRACTICE TEST DELAWARE
11.
During a walk around inspection of a double or triple trailer, make sure that the converter dolly air tank drain valve is _____ and the glad hands are ______.
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open; properly connected
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closed; not connected
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closed; properly connected
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open; not connected
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12.
Rollovers happen when drivers:
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turn too slowly.
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turn too fast.
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stop too often.
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brake too hard.
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13.
A red triangle with an orange center means:
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Law enforcement vehicle
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Liquid tanker
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Slow-moving vehicle
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The vehicle is hauling hazardous materials
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14.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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15.
When driving, you should check mirrors regularly to know where other vehicles are around you. Remember that:
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every registered motor vehicle must have at least one mirror.
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you should check your after the start of any trip to make sure they are properly adjusted.
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there are blind spots that your mirrors cannot show you.
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convex mirrors make things look larger and closer than they really are.
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16.
When coupling twin trailers, the more heavily loaded semitrailer should:
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have chocked wheels.
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be in first position behind the tractor.
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be in the rear.
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have its brakes locked.
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17.
Air tank drains:
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protect the tanks and the rest of the system from too much pressure.
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are used to move air to the brakes.
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should not be used in wet weather.
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are used to remove water and oil from the air tanks.
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18.
Combination vehicles usually:
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require more driving skill than single CMVs.
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are shorter than single than single CMVs.
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are easier to drive than single than single CMVs.
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All of the above.
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19.
Drivers transporting cargo are responsible for:
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inspecting the cargo.
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making sure the cargo is properly secured.
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recognizing overloads.
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All of the above.
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20.
Cargo should be properly covered:
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to protect the weather from the cargo.
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to protect people from spilled cargo.
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to block your view or someone else’s.
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All of the above.
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