1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
All tests
/
 
 
 
 
 
Advertisement

Free North Dakota CDL Air Brakes Test 2026

Avg. pass rate on our ND tests: 67%.
Average pass rate for this test: 65%.
Moderate
9 min
83% fail this test first try • Better here than at DOT
Score distribution:
90-100=>17%
80-89=>30%
70-79=>26%
60-69=>17%
<60%=>10%
Avg. first-try score: 83%

For a sure-fire method of passing your North Dakota DOT CDL Air Brakes Knowledge Test, our CDL Air Brakes Practice Tests are the key. If you don’t pass the Knowledge Test, your CDL will include the restriction “L,” preventing you from operating commercial motor vehicles (CMVs) with air brakes. Securing a CDL without an air brake restriction is vital for expanded job opportunities because most semi-trucks, tractor-trailers, and commercial buses rely on air brakes. Failing the air brakes test results in a one-day waiting period and a fee should you decide to retest. Use our North Dakota DOT CDL Air Brakes Practice Tests to pass on the first attempt.

Due to North Dakota’s diverse terrain, from high winds that cross the mostly flat terrain to the rolling hills in the Badlands, air brakes are necessary for large CMVs. North Dakota’s severe winters bring a lot of snow and ice that require reliable braking systems. Key transportation routes include I-94 (a major east-west route connecting Fargo, Bismarck, and Dickinson), I-29 (running north-south, linking the state to Canada and South Dakota), US-2 (serving the northern part of the state and its oil transportation), and US-83 (running north-south through Bismarck, critical for regional distribution). The restriction “L” would severely limit your job opportunities.

Free North Dakota CDL Air Brakes Test 2026
ND commercial driver's license
Original questions by our team Based on 2026 ND CDL Handbook

Reviewed for legal and handbook accuracy

Steven Litvintchouk

M.S., Chief Educational Researcher (ACES member)

Last verified for accuracy on

Test design and learning experience oversight

Andrei Zakhareuski

Co-founder & CEO, Driving-Tests.org

Questions are created and maintained by the Driving-Tests.org content team following our multi-layer editorial process and updated whenever the North Dakota DOT changes its handbook or website information. Official sources we check: 

About the North Dakota CDL

The Peace Garden State relies on drivers with the air brake qualification in industries such as agriculture, energy, and manufacturing. Major companies requiring this qualification include Hess Corporation and Marathon Oil in the energy sector and CHS Inc. and Bobcat in the agriculture and manufacturing industries. Harlow’s Bus and Truck Sales (Bismarck) and Jefferson Lines (Fargo) are charter bus companies requiring air brake-qualified drivers. Additionally, thousands of North Dakota full-size school buses require air brakes, creating numerous employment opportunities for drivers qualified to operate air brakes. Removing the “L” restriction is essential to these jobs.

Our CDL Air Brakes Practice Tests cover everything needed for the official DOT Air Brakes Knowledge Test. This material will also help you practice for your skills test. The written Air Brakes knowledge test features multiple-choice questions based on the state’s CDL manual (North Dakota CDL Handbook 2026) and requires a score of at least 80% to pass.

Our Practice Tests mimic the official knowledge test and offer instant feedback on all responses. This approach has been proven to speed learning and ensures you pass the test.

More ND CDL test resources

We know what it takes to pass. And we’ve got the proof.

Driver’s Ed is - nobody wants to set foot inside the DOT. That’s why millions of learners trust us for simple, visual, effective prep.

An official & trusted partner in driver education

We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.

A smarter way to study

Challenge Bank™

Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.

AI-powered feedback

Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.

Interactive handbook

Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.