Over 95% pass rate when practice at DMV Practice Test

North Dakota CDL DMV Knowledge Test Class A 1

Take 6 practice tests for CDL is the best way to prepare for your North Dakota DMV exam is by taking our free practice tests. The following question are from real North Dakota DMV practice test. More than 95% people pass a DMV exam when practice at DMV Practice Test.

Number of Test
Number of Question
Passing score
  • 0Correct
  • 0Incorrect
Not enough to pass :-(

Ouch! While you were on a roll there for a few questions, you didn’t pass this time. But I know this test, and I think you’ll pass next time. Really.

1. What is another name for front-end header boards?
Headache racks
Cargo stoppers
Head braces

Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.

2. While driving, if it is discovered a vehicle's ABS is not working, the driver should:
Put on their hazard lights.
Brake normally.
Use their parking brake to stop.

If an Anti-Lock Braking System (ABS) is not working, the vehicle's basic braking functions are still intact. The driver should continue to drive and brake in a normal fashion.

3. Which of the following is not an example of a distracted person that motorists should be worried about?
A driver talking to a passenger in their vehicle
A child on the side of the road
A construction worker on the side of the road
A person sitting on a bench waiting for a bus

You should be cautious when you are near people who are not paying attention to the road. Be wary of drivers who are engaged in conversation with passengers, children near the road, and road workers.

4. If one air system in a dual air brake system is very low on pressure:
None of the brakes will work at all.
Either the front or rear brakes will not be operating fully.
There will be no noticeable affect.
Lights on the outside of the tractor will flash.

In a dual air brake system, if one of the air systems gets very low on pressure, either the front or rear brakes will not be operating fully. You should bring your vehicle to a safe stop and have the air system repaired.

5. Loading cargo:
Must be done by the driver.
Can be done by a second person who is responsible for the safety of the cargo.
Can be done by a second person, but the driver is responsible for the safety of the cargo.
Must be done by a person from the shipping company.

Regardless of who has loaded cargo onto a vehicle, the driver is responsible for the safety of the cargo.

6. If you need to travel down a hill, you should switch into a lower gear:
After you start moving downhill.
As you go downhill and pick up speed.
Before you start moving downhill.
Near the bottom of the hill.

Always downshift before beginning to drive downhill. Forcing an automatic transmission into a lower gear at a high speed could damage the transmission and also lead to a loss of ability to engine brake. Drive at a speed that will allow you to control your vehicle without overusing your brakes. When determining a safe speed to drive, you should take into account the steepness of the grade, the length of the grade, the weight of your vehicle, road conditions, and weather conditions.

7. A vehicle should be equipped with all of the following, except:
A fire extinguisher.
Spare electrical fuses.
Warning devices for parked vehicles, such as flares.
A spotlight.

Commercial vehicles should always carry the proper emergency equipment. Be sure your vehicle is equipped with at least one fire extinguisher; spare electrical fuses, unless the vehicle is equipped with circuit breakers; and warning devices for parked vehicles, such as warning triangles, fuses, or liquid burning flares.

8. When driving:
It is best to hide your intentions from others.
You should only use turn signals if there are vehicles near you.
You should not use turn signals in construction zones.
You should always use turn signals to warn others about your intentions.

It is important to communicate your intentions to others on the road. Make sure to signal before turning or changing lanes, even if no other vehicles are nearby.

9. Spring brakes come on:
When too much air pressure is lost.
When a control on the dashboard is activated.
When the tires have minimal tread depth.
When the brakes are noisy.

Spring brakes come on automatically when air pressure drops to an unsafe psi level. Instead of waiting for the spring brakes to automatically activate, you should safely exit the road as soon as you notice the low pressure warning signal and bring your vehicle to a stop while you are still able to control the brakes.

10. An air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately ____ to come to a complete stop.
100 feet
250 feet
300 feet
450 feet

A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.

11. If you see lights ahead while driving in fog:
You can assume the lights are on the road.
It may be a reflection.
It may be an optical illusion.
The lights may not indicate where the road is as the vehicle may have pulled off the roadway.

When driving under foggy conditions, lights cannot be taken as a reliable indication of where the road is. The lights may be coming from a vehicle that has pulled off the road.

12. An air compressor governor will stop the compressor from pumping air once the air tanks have an air pressure level of:
125 psi.
100 psi.
150 psi.
80 psi.

An air compressor governor will stop the compressor from pumping air once the air tanks are at an air pressure level of 125 psi. This air pressure level is referred to as the "cut-out" level.

13. Driving too fast:
Is a major cause of fatal crashes.
Can be a good way to get to your destination quickly.
Should only be done if the roadway is dry.
Is acceptable in light traffic.

Driving at excessive speeds is a major cause of fatal crashes. Never drive above the posted maximum speed limit and adjust your speed to fit conditions.

14. If you are unsure if there is enough space for your vehicle to safely travel under a bridge, you should:
Speed up.
Swerve as you pass under the bridge.
Slow down.
Drive on the shoulder.

If you aren't sure that you have space for your vehicle to safely fit underneath an overhead object, slow down and seek an alternate route if possible.

15. If unsure if a road is becoming icy, a driver can:
Open the window and check the front of the mirror for ice.
Try to look at the road closely.
Look at a weather forecast.

If you think the road surface may be becoming icy, you can check for ice on your vehicle by opening the window and feeling the front of the side mirror, mirror support, or antenna. If ice has formed on any of these items, the road is likely becoming icy as well.

16. Mirror adjustment should be:
Checked once a month.
Checked before every trip.
Checked, but only if the driver plans to use the mirrors.

The adjustment of your mirrors should be checked prior to the start of all trips. Adjust your mirrors as needed.

17. What is the minimum permitted size of a placard?
Four square inches
Seven square inches
10 ¾ square inches
32 square inches

Hazardous materials must be diamond-shaped and a size of at least 10 ¾ square inches.

18. If confronted by an aggressive driver, you should:
Make eye contact with the driver.
React to the driver's gestures.
Challenge the driver to a road race.
Ignore the driver, if possible.

If you encounter an aggressive driver, the most important thing to do is get out of their way, if possible. Do not provoke the driver by challenging them or making eye contact, and do not let yourself be provoked by rude gestures they might make.

19. If a tire fails, you should:
Use the brakes.
Stay off the brakes.
Wave your arms at other drivers.

Using the brakes after a tire failure could cause you to lose control of your vehicle. Unless you're about to hit something, stay off of the brake until the vehicle has slowed sufficiently.

20. Slippery roadways usually:
Make it more difficult to stop a vehicle.
Make it easier to stop a vehicle.
Make it easier to drive a vehicle.
Can be avoided by driving at night.

It takes a longer distance to stop a vehicle on a slippery road than it does on a dry road. Use caution when driving under conditions that could cause a road surface to become slippery.

21. If cargo on a flatbed trailer is 40 feet long, it must be secured by a minimum of:
One tie-down.
Two tie-downs.
Three tie-downs.
Four tie-downs.

On flatbed trailers and trailers without sides, cargo must be tied down. There should be at least one tie-down for every 10 feet of cargo. Regardless of the size of the cargo, at least two tie-downs must be used.

22. When checking your mirrors:
Do not use the passenger side mirror.
Do not use the driver's side mirror.
Both mirrors should be used.
Look in each mirror for long stretches of time.

To travel safely, it is essential that you know what is happening on all sides of your vehicle at all times. Check all mirrors frequently while driving.

23. An open automobile window in cold weather may indicate that the driver is:
Driving impaired.
Inappropriately dressed.
Using the heat inside their vehicle.
Enjoying the fresh air.

It is important to observe other drivers' behaviors and identify clues that indicate when person could be driving impaired. Drivers who have had too much to drink, are sleepy, are on drugs, or are ill can present hazards to other drivers. A person driving with their window open in cold weather may be impaired.

24. When driving at highway speeds, you should watch the road about ____ ahead of your vehicle.
One block
100 yards
One quarter mile
One mile

Stay aware of upcoming obstacles and hazards by consistently watching the road at least 12 to 15 seconds ahead of your vehicle. When traveling at highway speeds, this is equivalent to about a quarter of a mile.

25. Which of the following is not an example of a driver who might be a hazard?
A driver operating a vehicle without first scraping ice off the windshield
The operator of a rental truck
The driver of a station wagon with items covering the back windows
A person operating a pick-up truck

Drivers with blocked vision may pose hazards to others on the road. Examples of such drivers include those who haven't scraped ice off of their windshields; those driving vehicles loaded with large items blocking the windows; and those who are driving rental trucks without being used to the limited rear visibility of a truck.

26. If loading cargo that will not entirely fill up a trailer, the cargo should be placed:
At the front of the trailer.
At the rear of the trailer.
In the middle of the trailer.
Anywhere in the trailer.

Cargo must be properly balanced so that there is neither too little nor too much weight on the front or rear axles. Improperly balanced cargo can damage a vehicle and affect the handling of a vehicle.

27. ____ is a thin layer of ice that forms on road surfaces.
White ice
Black ice
Green ice
Blue ice

Black ice is a layer of ice that is thin and clear enough for the road to be visible through it. This makes the road look as if it is merely wet.

28. Poisonous fumes can enter a truck's cab due to:
A defective exhaust system.
The wrong type of fuel being used.
A lack of oil in the engine.
Under-inflated tires.

Defects in an exhaust system are very dangerous because they can cause poisonous fumes to enter the cab or sleeper berth.

29. Why are roads especially slippery right after it begins to rain?
The water mixes with oil and grease on the road.
Roads are naturally slippery.
Gravel often gets washed to the middle of the lane.
Tires are not usually designed to drive in rain.

In rainy weather, roads are often at their most slippery when the rain first begins to fall. Fresh rainwater mixes with oil and grease on the road to form a slick film. As the rain continues, this mixture will eventually wash away.

30. A modulating control valve can control the:
Spring brakes.
Landing gear.
Air brakes.
Anti-lock braking system (ABS).

A modulating control valve allows a driver to gradually apply spring brakes. In equipped vehicles, the valve is controlled by a lever located on the dashboard.

31. When starting the engine as part of the pre-trip inspection, the driver should:
Listen for unusual noises.
Rev the engine.
Turn up the radio.
Turn on the heater.

Check your engine during the pre-trip inspection. After starting the engine, you should listen for unusual noises.

32. When about to drive a vehicle with a dual brake system, a driver should:
Let the vehicle warm up to ensure the fuel reaches the engine.
Wait for air pressure to build in both the primary and secondary systems.
Begin driving just after the engine starts.
Pump the pedal about 20 times to build pressure, then begin driving.

Before driving a vehicle with a dual air brake system, allow time for the compressor to build up pressure to at least 100 psi in both systems.

33. In cold weather, an alcohol evaporator should be checked and filled:
Once a week.
Every day.
Every hour.
Once a month.

An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.

34. When crossing railroad tracks, you should:
Not stop.
Try to pass slower vehicles.
Change lanes.
Put the vehicle in neutral.

When crossing railroad tracks during the on-road driving skills test, you must not stop, change gears, pass another vehicle, or change lanes while any part of your vehicle is in the railroad crossing.

35. Vehicles with dual air brake systems:
Maintain full-capacity air pressure in the braking systems even when the vehicle is not running.
Maintain some air pressure in the braking systems when the vehicle is not running.
Must be run to build enough air pressure to brakes to operate properly.
Do not need time to build air pressure before a trip.

Before driving a vehicle with a dual air brake system, you must allow the air compressor time to build up at least 100 psi of air pressure in both the primary and secondary systems.

Your Progress
  • 0Incorrect (7 allowed to pass)
  • 0Correct