- Based on 2025 AB commercial driver's licence manual
- Updated for January 2025
Alberta Class 4 Licence Test 9
Looking to secure a professional driving licence in Alberta? Our Class 4 Licence Test 9 is the perfect study aid, updated for 2025 with 50 critical questions. This practice test is designed to help you navigate through the essentials of commercial driving, including passenger management and safety practices. With no road test to worry about, your focus can be purely on the knowledge and vision tests. For a $17 fee, take the test at any registry agent, aiming for a minimum score of 25 out of 30. Backed by the Commercial Driver’s Guide and the Driver’s Guide, our practice test will help pave your way to a professional driving licence.
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
This test is a Premium member exclusive. You'll get
What you need to know
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.
What to expect on the official exam
50
questions
40
correct answers to pass
80
passing score
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.
Written by Andrei Zakhareuski Updated over a week ago
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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List of questions (classic view)
- On a left curve when you're pulling a trailer, where should you keep the front of your vehicle?
- What is the minimum size required for square chocks for a commercial vehicle?
- The law requires that the wheels of a parked vehicle be no more than _______ from the curb.
- In the case of a breakdown on a highway outside of an urban area between sunrise and sunset, you should activate your hazard lights and place approved warning devices
- What to do when you experience a breakdown on a highway outside urban limits between sunset and sunrise, or anytime visibility is less than 150m?
- If a vehicle's load reaches or extends more than 1.5 m past its rear, what is required?
- You're driving a school bus. What should you do if the bus breaks down during the day?
- You're driving a school bus. What should you do if the bus breaks down during the night?
- A broken centre line on a roadway means that you may
- A bus driver should choose a safe driving speed, primarily based on
- A controlled railway crossing may have
- A Slow-Moving Vehicle sign should be placed on any vehicle that travels no faster than
- A tire that is overinflated or underinflated can
- A tractor-trailer travelling at high speeds creates air turbulence in which of the following areas?
- A vehicle that is twice the weight of a car and is travelling at twice the speed of that car requires how much braking power to stop in the same distance?
- What is a danger zone?
- Which dashboard gauge can help you decide when to upshift?
- Airbags are
- An engine governor is
- Any defect or deficiency that you find on your bus must be
- At which of the following engine speeds should you drive your vehicle?
- Before you enter a curve, what gear should you select?
- Besides regular brake maintenance, who is responsible for ensuring that the brakes of a vehicle are working properly before the vehicle is driven?
- Compounding the air brakes can
- Different-sized tires can
- Double-clutching is
- During a pre-hill inspection of a vehicle equipped with air brakes, you should do which of the following?
- During your brake tests, you find that the brakes are not operating safely. What should you do?
- During your pre-trip inspection, you discover a defect that does not affect the safe operation of the vehicle. What should you do?
- For large commercial vehicles, which of the following are advantages of air brakes as compared with hydraulic brakes?
- Generally the safest drivers are those who
- How can you downgrade from a commercial licence to a non-commercial licence?
- How can you ensure smooth braking of a large commercial vehicle?
- How can you tell how much air pressure is in the service reservoirs?
- How should you drive through a large amount of water on the roadway?
- How should you handle driving around a curve?
- Idling for longer than five minutes can
- If a bus becomes disabled on a roadway during the day, flares or reflectors must be placed approximately _________ in front of and behind the vehicle.
- If a crash occurs while you are backing up with the aid of a guide, who will be held responsible?
- If a fire starts in your vehicle, you should do which of the following?
- If a front tire blows out, what should you do first?
- If a peace officer asks for your logbook and supporting documents, what documents should you provide?
- If an air line ruptures between the compressor and the supply reservoir, what will prevent loss of air pressure in the service brake system?
- If another driver wants to pass your vehicle, what should you do?
- If you are parking a bus on a downgrade, you should
- If you are parking a vehicle on a downgrade, you should
- If you are required to keep a logbook, what must you have in your possession?
- If you are parking a single-unit (straight) vehicle on an upgrade without a curb, you should
- If you are parking your vehicle on an upgrade without a curb, you should
- If you are unable to keep up with traffic on a steep grade, what should you do?
- If you intend to make a right turn on a red light, you must
- In Alberta, are you allowed to turn right at a solid red light?
- How should you communicate with a passenger who is deaf or has hearing loss?
- A mobility device is
- What should you do before speaking to a person who is deaf or has hearing loss?
- What is the appropriate action when transporting a person with a mobility device?
- Which of the following are barriers to accessibility?
- How should you respond if a passenger is harassing you?