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View All Plans- Based on 2025 AB commercial driver's licence manual
- Updated for May 2025
FREE AB Air Brake Practice Test 1
Before you may obtain a commercial driver’s licence of any class in Alberta, you must pass a written knowledge test and a practical test. The knowledge test is a multiple-choice test. The test takes about 30 minutes, and you must score at least 80% to pass. The questions on the knowledge test partly depend on which class of commercial licence you’re applying for. (As you would expect, the Class 1 knowledge test may have questions on cargo management, and the Class 2 test may have questions on passenger management and safety.)
For a Class 1 or Class 2 licence, you’re also required to complete Mandatory Entry-Level Training (MELT). The MELT course will take about 113 hours for Class 1 or 50 hours for Class 2. It includes classroom instruction, yard training (pre-trip inspections and basic maneuvers), and behind-the-wheel driving.
Nearly all large commercial vehicles (including Class 1 semi-trucks and Class 2 full-size buses) are equipped with air brakes. To be qualified to operate air brakes, you must obtain an Air Brakes (“Q”) endorsement on your commercial licence. An exception is Class 1, for which air brake qualification is a legal requirement. For either a Class 1 licence or the Q endorsement, you must complete an approved air brake course and answer knowledge test questions on air brakes. The course includes 6½ hours of classroom instruction, 45 minutes of practical instruction and practice, and a 15-minute practical test. Then you must pass a practical assessment and a separate official Air Brakes knowledge test. Once you pass the knowledge test, you can get the Q endorsement.
The Commercial Driver’s Guide and the Air Brake Manual – A Guide for Students are the official references for aspiring commercial drivers in the province. However, if you would like more intensive knowledge training on air brakes than you can get by reading the manuals or taking the required courses, we can help!
This 20-question Alberta Air Brake practice test, the first of fourteen such tests we offer, covers the basics of commercial driving with air brakes in Alberta. All practice questions are based on the official Alberta references. If you get stuck on a question, ask our AI assistant to give you a hint, rephrase the question, or answer your own questions about commercial driving. If you still miss the question, the AI Assistant will immediately give you the correct answer and an explanation.
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
More resources
- Alberta: Test 1 / Test 2
- British Columbia: Test 1 / Test 2
- Manitoba: Test 1 / Test 2
- New Brunswick: Test 1 / Test 2
- Northwest Territories: Test 1 / Test 2
- Nova Scotia: Test 1 / Test 2
- Nunavut: Test 1 / Test 2
- Ontario: Test 1 / Test 2
- Prince Edward Island: Test 1 / Test 2
- Quebec: Test 1 / Test 2
- Saskatchewan: Test 1 / Test 2
- Yukon: Test 1 / Test 2
- Should you pump (keep pressing and releasing) air brakes?
- It is important to keep compressed air as dry as possible because
- What does the low air pressure warning device warn you about?
- If the low air pressure warning signal comes on, what should you do?
- The effectiveness of the spring brakes for emergencies or parking
- During normal driving, what keeps the spring brakes released?
- Assuming good traction and constant vehicle weight, if you double your speed, your vehicle's braking distance will be
- If drum brakes overheat, the vehicle's stopping distance will increase. What is the reason for this?
- Air braking systems tend to react slower than hydraulic braking systems because
- While travelling downhill, you notice that each time you want to brake, you must press the brake pedal farther down than the last time to achieve the same braking force. What could be causing this?
- The maximum air pressure available for braking is determined by
- The foot (treadle) valve
- Which of the following can impair braking effectiveness?
- After you apply the service brakes, what happens to that compressed air?
- What does an alcohol evaporator do?
- Which of the following is NOT a type of auxiliary retarder?
- You're driving a vehicle equipped with a dual air brake system. The low air pressure warning signal comes on, but one system still has normal pressure. What should you do?
- How should you test a tractor-trailer's low air pressure warning signal?
- An application pressure gauge shows the air pressure
- All vehicles equipped with air brakes must have
- What is the colour coding that is often used for the supply and service lines to the trailer?
Our commitment to accuracy and quality in our practice tests
Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.
At Tests.ca, we understand the importance of reliable and accurate practice tests to help you prepare for your driver's knowledge exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.
Here's an inside look at how we maintain the highest quality in our practice tests.
Content Creation and Verification Process
- Alignment with Official Driving Handbooks:
Every question we develop is based on the most recent version of each province's official driving manual. Our team regularly monitors each province's official website for the latest updates to ensure our practice tests are always aligned with the most current information. - Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation. - Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy. - Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors. - User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly. - Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the provincial government manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the government publishes them.
Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your driver's knowledge exam.
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