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CDL DOUBLES PRACTICE TEST VERMONT

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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The Vermont doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The VT CDL doubles triples test covers the following sections of the Vermont CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this VT CDL practice test now to prepare for the actual test!
1. With a dual air brake system:
each system has its own air tanks, hoses and lines.
each system shares the same lines and hoses.
each system shares air tanks.
2. Cargo should be properly covered:
to protect the weather from the cargo.
to protect people from spilled cargo.
to block your view or someone else’s.
3. Front-end header boards:
should never be used.
protect drivers from cargo in case of an accident or emergency stop.
protect drivers from spilled cargo.
4. Empty trucks:
require the same stopping distance than full trucks.
require a shorter stopping distance than full trucks.
require a greater stopping distance than full trucks.
5. Excessive use of the service brakes results in overheating. Too much heat can:
cause the brakes to grab.
make the brakes stop working.
cause the brakes apply unevenly.
6. Older trailers do not have spring brakes. If the air supply leaks away:
there will be no emergency brakes.
the ABS won't work properly.
the trailer will stop normally.
7. If the fifth-wheel locking lever is not locked after the jaws close around the kingpin:
the parking brakes are on and the wheels are chocked.
the parking brakes are on and your vehicle is safe to drive.
the coupling is not right and you should not drive until you get it fixed.
8. _________ rigs are much more likely to roll over in an accident than _________ rigs.
Empty ; fully loaded
Fully loaded ; overloaded
Fully loaded ; empty
9. You should always try to back toward the driver's side because:
you can watch the rear of your vehicle out the side window.
backing toward the left side is more dangerous.
None of the above.
10. Which of the following will NOT help you prevent rollover?
Keeping the cargo as close to the ground as possible.
Using the controlled braking method.
Driving slowly around turns.
 
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VT CDL Doubles Triples Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Number of questions: 20
Correct answers to pass:16
Passing score:80%
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