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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Vermont CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Vermont CDL Manual. Take this practice test now to prepare for the actual VT CDL combination test!
1. When driving trucks with trailers, drivers should:
make quick lane changes.
avoid making sudden movements with the steering wheel.
push the brake pedal to the floor when braking.
2. If driving a heavy vehicle, you should:
try to pass other vehicles going uphill.
stay in the right lane.
stay in the left lane.
3. When driving on slippery roads, you should NOT:
try to anticipate stops early.
use the engine brake.
go slowly.
4. Rollovers happen when drivers:
brake too hard.
turn too slowly.
turn too fast.
5. Headlights:
must be turned on a half hour before sunset to a half hour after sunrise.
can blind other drivers.
should not be used when driving at night.
6. When more cargo is piled up in a truck, the truck becomes easier to turn over. Fully loaded rigs are _________ to roll over in a crash than empty rigs.
five times more likely
ten times more likely
three times more likely
7. Combination vehicles have __ air lines.
8. Empty trucks:
require a shorter stoppingĀ distance than full trucks.
require the same stoppingĀ distance than full trucks.
require a greaterĀ stopping distance than full trucks.
9. You are coupling a semi-trailer to your tractor but have not yet backed under. The trailer is at the right height when:
the end of the kingpin is even with the top of the fifth wheel.
it will be raised slightly when the tractor is backed under it.
the locking jaws are around the head of the kingpin.
10. Axle weight is:
the weight of all the axles added together.
the weight transmitted to the ground by one axle or one set of axles.
the maximum safe weight your tires can carry at a specified pressure.
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VT CDL Combination 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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