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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Virginia 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 Virginia CDL Manual. Take this practice test now to prepare for the actual VA CDL combination test!
1. Dual tires:
should not come in contact with each other.
should come in contact with each other whenever possible.
should always come in contact with each other.
2. How do you find out how many seconds of following distance you have?
Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
3. If you unlock the pintle hook with the dolly still under the rear trailer:
the brakes could be damaged by the combined forces of the springs and the air pressure.
your vehicle might roll away.
the dolly tow bar may fly up.
4. If loose or missing, _______ may cause movement between the frame and fifth wheel assembly.
locking pins
mounting bolts
electric connectors
5. Do NOT use the parking brakes:
when you leave your vehicle.
if the brakes are very hot.
when you park for less than two hours.
6. The parking brake:
should be used when you need to apply the brakes firmly.
should be used when driving in bad weather.
should be used whenever you park.
7. If your vehicle thumps or vibrates heavily, it may be a sign that:
you need to shift up.
one of the tires has gone flat.
the brakes have failed.
8. As part of the final air brake check, you should:
Test air leakage rate.
Check air compressor governor cut-in and cut-out pressure.
All of the above.
9. Most heavy trucks with manual transmissions require ____ to change gears.
single clutching
triple clutching
double clutching
10. You should test the coupling by:
pulling against the pin of the second semitrailer.
applying the parking brakes so the rig will not move.
locking the pintle hook.
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VA CDL Combination Test

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