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Free Minnesota CDL Air Brakes Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 MN commercial driver's license manualAvailable in EN, ES
30questions
6mistakes allowed
80%passing score
Today, you will have an opportunity to become a safer commercial driver and get one step closer to a less restricted CDL in the state of Minnesota. In order to have CDL without an air brakes restriction, you must correctly answer exam questions about air brakes. This practice exam, based closely on questions directly from the Minnesota Commercial Driver’s Manual, will allow you become comfortable with both the format of the exam (multiple-choice) and the subject matter, through answering questions and reading each explanation that comes with the questions. Soon, you will be able to receive the score that you want on your air brakes exam and you’ll be a safer, less limited Minnesotan commercial driver. Good luck!
Perfect for
- First-time MN CDL and CLP applicants
- CDL holders adding endorsements
- MN CDL renewal applicants
What to expect on the actual exam
| How many questions | 25 |
|---|---|
| How many correct answers to pass | 20 |
| Passing score | 80% |
Unlock all 1,500+ exam-like questions for Minnesota. Pass Guarantee
Become a member to unlock our extensive library of 1,500+ exam-like questions and get your Minnesota ELDT certification online. Official FMCSA-approved national Entry-Level Driver Training provider.
Pass the first time, guaranteed
List of questions (classic view)
- Which of the following is NOT part of the drum brake?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- If the air tanks are not drained,
- Which of the following is NOT part of the braking process when driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
- Which vehicles must have low air pressure warning signals?
- When should you use the parking brake?
- Slack adjusters are
- At what measurement is the safety valve USUALLY set to open?
- Under which conditions are front wheel brakes good?
- Which of the following should you do before leaving your vehicle unattended?
- Which of the following is NOT part of the air brake system?
- Which of the following are true about a dual air brake system?
- Why must you pass a knowledge test on air brakes?
- How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
- What is the best way to test your vehicle's low air pressure warning signal?
- An anti-lock braking system (ABS)
- The purpose of a supply pressure gauge is
- Which of the following can cause brakes to fade or fail?
- Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
- After the initial drop, the maximum acceptable leakage rates per minute are
- The tractor protection valve
- When should you drain your air tanks?
- How do brakes work on a long, steep downgrade?
- How do you check your truck's slack adjusters?
- Spring brakes are
- The low air pressure warning signal will come on before the pressure in the air tanks falls below
- A low pressure warning signal is required on
- All vehicles equipped with air brakes have
- With air brake-equipped vehicles, the parking brakes should be used
- The use of air brakes on a downgrade is only a supplement to the
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