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Drivers who want to drive combination vehicles must pass the combination vehicles test. The New Mexico 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 New Mexico CDL Manual. Take this practice test now to prepare for the actual NM CDL combination test!
1. To prevent rollover, you should:
drive slowly around corners.
drive on the shoulder of the road when possible.
drive in the left lane.
2. When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
left; right
right; left
left; left
3. Enough tread is especially important in winter conditions. You need at least ________ tread depth on steering axle tires.
6/24 inch
2/8 inch
4/32 inch
4. Most truck driver deaths in crashes result from:
truck rollovers.
driving side-by-side with another truck.
5. If you are driving a 30 foot vehicle at 35 mph, you should leave at least _______ between your vehicle and the vehicle in front of you.
4 seconds
3 seconds
2 seconds
6. 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.
7. If an item placed on a flatbed trailer is 7 feet long, it should have __ tie-downs.
8. 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.
9. Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
the parking brake should never used to slow the vehicle.
shifting into neutral may help slow the vehicle.
10. Having ABS on only the trailer:
still gives you more control over your vehicle during braking.
is very dangerous.
makes the trailer more likely to swing out.
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NM CDL Combination Test

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