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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Hawaii 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 Hawaii CDL Manual. Take this practice test now to prepare for the actual HI CDL combination test!
1. You should use chocks when parking a trailer without spring brakes because:
it is required by law.
the brakes will hold only as long as there is air pressure in the trailer air tank.
it helps prevent skids.
2. A steering wheel should have no more than _____ of play. If there is more play than this, it may be hard to steer.
10 degrees
15 degrees
30 degrees
3. When driving in very hot weather, the heat will increase the chances of:
tire failure.
loss of hydraulic pressure.
ABS malfunction.
4. If you have convex mirrors, be aware that:
in a convex mirror objects appears larger than they really are.
everything appears smaller in a convex mirror than it would if you were looking at it directly.
objects seem closer than they really are.
5. 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:
ease into the other lane slowly so the other car can get out of the way.
wait until you are sure the car isn't in your blind spot.
assume the car left the roadway and change lanes as normal.
6. If the drive wheels start to skid:
accelerate slightly to regain control.
use the brakes to slow down.
push in the clutch to let them turn freely.
7. Banked curves:
have a safe "design speed".
can be taken at any speed.
should always be avoided.
8. Which of these is more likely to rollover due to the "crack-the-whip" effect?
The last trailer of doubles
The last trailer of triples
The front trailer of 65 ft. conventional doubles
9. Antifreeze:
helps the engine only under hot conditions.
helps the engine under hot conditions as well as cold conditions.
helps the engine only when the temperature is below freezing.
10. Before leaving your vehicle unattended, you should:
Remove the keys.
Apply the parking brake.
All of the above.
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HI 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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