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Free Wyoming CDL Air Brakes Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 WY commercial driver's license manualAvailable in EN, ES
30questions
6mistakes allowed
80%passing score
Wyoming is a beautiful and amazing state, and also a haven for truck drivers. There aren’t many people in Wyoming, which many people love about the state. But it also means that those who fill jobs must know all the tricks of their various trades. In the case of truck driving, it means that the best Wyoming truck drivers are certified for all types of vehicles, including those with air brakes. To make the most of your Wyoming CDL, you want to remove any limits if you have them, and that starts right now with this practice quiz, to prepare for the CDL air brakes exam, so that soon you can drive a much wider range of commercial vehicles. The quiz is closely based on the questions in the Wyoming Driver License Manual for Commercial and Heavy Vehicles with explanations that you should read closely for each question. It is multiple-choice, just like the real air brake exam will be, so that you can get comfortable with this format. By practicing early and often, you will soon become comfortable and receive the score that you want on the exam. Soon after that, you’ll be driving a vehicle with air brakes safely and proudly down the fine Wyoming highways!
Perfect for
- First-time WY CDL and CLP applicants
- CDL holders adding endorsements
- WY 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 Wyoming. Pass Guarantee
Become a member to unlock our extensive library of 1,500+ exam-like questions and get your Wyoming ELDT certification online. Official FMCSA-approved national Entry-Level Driver Training provider.
Pass the first time, guaranteed
List of questions (classic view)
- When should you drain your air tanks?
- Under which conditions are front wheel brakes good?
- Which of the following can cause brakes to fade or fail?
- How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
- Which of the following is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
- How do brakes work on a long, steep downgrade?
- Why must you pass a knowledge test on air brakes?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- What is the best way to test your vehicle's low air pressure warning signal?
- How would you check your truck's slack adjusters?
- Slack adjusters are
- When should you use the parking brake?
- An anti-lock braking system (ABS)
- Spring brakes are
- Which of the following should you do before leaving your vehicle unattended?
- Which of the following is NOT part of the air brake system?
- After the initial drop, the maximum acceptable leakage rates per minute are
- At what measurement is the safety valve USUALLY set to open?
- The purpose of a supply pressure gauge is
- If the air tanks are not drained,
- Which of the following is NOT part of the drum brake?
- Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
- Which of the following are true about a dual air brake system?
- Which vehicles must have low air pressure warning signals?
- The tractor protection valve
- 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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