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Drivers who want to drive combination vehicles must pass the combination vehicles test. The North Dakota 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 North Dakota CDL Manual. Take this practice test now to prepare for the actual ND CDL combination test!
1. Under-loaded front axles can:
cause poor traction.
make the steering axle weight too light to steer safely.
cause the drive wheels to spin easily.
All of the above.
2. When you have to back, you should always try to back toward the driver's side. Why?
You can see better and watch the rear of your vehicle by looking out the side window.
You can watch the front of your vehicle by looking out the side window.
Backing toward the left side is more dangerous.
All of the above.
3. Strong winds can make it difficult to stay in your lane especially when driving:
heavier vehicles.
flatbed trailers.
lighter vehicles.
vehicles with ABS.
4. What should you do if your vehicle gets stuck on the railroad tracks?
Turn on the emergency flashers and call 911.
Stay inside the vehicle and call 911.
Get out of the vehicle and away from the tracks as quickly as possible, then call 911.
Call 911, then get out of the vehicle and away from the tracks.
5. Antifreeze:
helps the engine only under hot conditions.
helps the engine under hot conditions as well as cold conditions.
doesn't help the engine in any way.
helps the engine only when the temperature is below freezing.
6. One way to prevent hydroplaning is to:
take curves at higher speeds.
use the controlled braking method.
have less than 4/32 inch tread depth in every major groove on front tires.
make sure you have enough tread on your tires.
7. If you are feeling sleepy, you should:
increase your speed to get to the destination quicker.
pull off the road and rest or take a nap.
slow down and drive on the shoulder of the road.
None of the above.
8. The center of gravity of a trailer should be:
as low as possible.
at the rear of the trailer.
as high as possible.
at the front of the trailer.
9. When you are driving on a slippery road, you should NOT:
take curves at slower speeds.
keep a longer following distance.
adjust turning and braking to road conditions.
use the engine brake or speed retarder.
10. Before entering an intersection, make sure that:
accelerate smoothly and change gears as necessary.
That there is enough room for the rear of your vehicle to clear the stop line on your side.
there's enough room to get at least halfway across.
there is sufficient space to clear it.
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ND Combination Test

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