North Dakota CDL Class B Practice Test (ND) 3

5 out of 5 (45 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As you prepare for your Class B CDL in North Dakota, it's important to have reliable resources at your fingertips. That's where our third ND CDL practice test comes in, tailored specifically to meet your needs as a future commercial driver. This DMV practice test is an indispensable tool for anyone aiming to acquire a Class B CDL, offering a comprehensive review and a clear understanding of what to expect on the actual test. Our CDL practice test consists of 20 thoughtfully crafted questions that mirror the real 2026 class B DMV test in style and content. To pass, you'll need to correctly answer at least 16 of these permit test questions. But don't let that intimidate you! This North Dakota CDL practice test is designed to be a stress-free learning tool, allowing you to build your knowledge and confidence at your own pace, without the pressure of the real DMV written permit test looming over you. What sets our ND class B CDL practice test apart is its focus on real-world scenarios. You'll encounter sample DMV questions that not only test your knowledge but also challenge you to apply what you've learned to situations you're likely to face on the road. From pre-trip vehicle inspection to the nuances of shifting gears, controlling speed, and effective communication with other road users, our North Dakota general knowledge CDL practice test covers it all. We also emphasize the importance of drug and alcohol awareness, ensuring you're well-prepared for responsible driving. Another key feature of our North Dakota class B CDL practice test is its freshness. We constantly update our questions to reflect the most current regulations and practices, ensuring that you're studying the most relevant and up-to-date material for the year 2026. Remember, this North Dakota CDL practice test is more than just a study tool; it's a bridge to your success as a commercial driver in 2026. Take advantage of this opportunity to hone your skills and deepen your understanding of what it takes to be a safe and competent driver!
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Sample North Dakota CDL Test Questions - General Knowledge

Question 1

Which vehicle fire may require large amounts of water to cool the burning material?

  1. A A tire fire
  2. B A gasoline fire
  3. C A diesel-fuel fire
  4. D An energized electrical fire

Correct answer: A – A tire fire

The North Dakota CDL manual explains that a burning tire must be cooled and may require a large amount of water. Water must not be used on an energized electrical fire because of shock risk. It also should not be used on a gasoline fire because it can spread the burning fuel and flames.

Source: North Dakota Commercial Driver License Manual (2025–2027) — § 2.21.3, “Fire Fighting”

Question 2

Why must you select a proper low gear before beginning a steep downgrade?

  1. A It allows you to ignore the service brakes
  2. B After speed builds, you may be unable to engage a lower gear and could lose engine braking
  3. C It keeps the vehicle at its normal highway speed
  4. D It prevents all transmission wear

Correct answer: B – After speed builds, you may be unable to engage a lower gear and could lose engine braking

Select a low gear before starting down the grade so the engine can help control vehicle speed. If speed has already increased, the transmission may not shift into the desired lower gear. The driver may also be unable to reengage any gear, resulting in the loss of engine braking when it is most needed.

Source: North Dakota Commercial Driver License Manual (2025–2027) — § 2.16.2, “Select the Right Gear Before Starting Down the Grade”

Question 3

Compared with flat mirrors, convex mirrors provide which advantage?

  1. A They show a wider viewing area
  2. B They make objects appear closer
  3. C They make objects appear larger
  4. D They eliminate every blind spot

Correct answer: A – They show a wider viewing area

Convex mirrors show a wider area than flat mirrors and can reduce the size of blind spots. However, objects appear smaller and farther away than they actually are. Drivers must account for this distortion when judging another vehicle's distance and should continue checking the appropriate mirrors before changing position.

Source: North Dakota Commercial Driver License Manual (2025–2027) — § 2.4, “Seeing”

Question 4

Before backing with a helper, which hand signal is most important to agree upon?

  1. A Slow down
  2. B Pull forward
  3. C Continue straight back
  4. D Stop

Correct answer: D – Stop

The driver and helper should agree on a clear set of hand signals before backing begins, especially a signal for “stop.” The helper should remain near the rear of the vehicle in a position where the driver can see them. If visual contact is lost or the stop signal is given, the driver should stop the vehicle.

Source: North Dakota Commercial Driver License Manual (2025–2027) — § 2.2.4, “Backing Safely”

Question 5

According to the North Dakota CDL manual, how long does a typical tractor-trailer need to clear a double-track railroad crossing?

  1. A More than 13 seconds
  2. B More than 14 seconds
  3. C More than 15 seconds
  4. D More than 16 seconds

Correct answer: C – More than 15 seconds

A typical tractor-trailer requires more than 15 seconds to clear a double-track crossing and at least 14 seconds to clear a single track. Before entering, the driver must be certain the entire vehicle can cross without stopping on the tracks. Traffic conditions must not be allowed to trap any part of the vehicle on the crossing.

Source: North Dakota Commercial Driver License Manual (2025–2027) — § 2.15.5, “Crossing the Tracks”

Question 6

How does closer axle spacing affect the maximum weight permitted under a bridge formula?

  1. A It allows a greater maximum axle-group weight
  2. B It results in a lower maximum axle-group weight
  3. C It has no effect on the permitted weight
  4. D It changes only the manufacturer's GVWR

Correct answer: B – It results in a lower maximum axle-group weight

The North Dakota CDL manual explains that a bridge formula permits less maximum weight when axles are closer together. Federal bridge-formula law uses the number of axles and the distance between the extreme axles in a group when calculating the allowable gross weight. Greater spacing distributes the load over a longer section of the roadway or bridge.

Source: North Dakota Commercial Driver License Manual (2025–2027) — § 3.2.2, “Legal Weight Limits”, 23 U.S.C. § 127(a)(2) – Vehicle weight limitations—Interstate System

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