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Based on 2025 NL commercial driver's licence manual
Updated for May 2025
FREE Newfoundland and Labrador Class 3 Licence Test
In Newfoundland and Labrador (NL), you must hold a Class 1 or 3 commercial driver’s licence to operate Class 3 vehicles. This NL Class 3 licence practice test can help you! Class 3 vehicles are typically single-unit trucks with three or more axles. The province employs a huge variety of such vehicles for diverse applications. You may find employment opportunities operating cement mixers, delivery trucks, dump trucks, flatbed trucks, garbage trucks, hydrovac trucks, service trucks, or snowplows.To apply for a Class 3 commercial driver’s licence in NL, you must have held a full Class 5 driver’s licence for at least one year and pass a vision test.Next, you must pass a road signs test and a written knowledge test on the theory of driving Class 3 vehicles. The passing score for each test is 80%. Because most Class 3 vehicles in NL have air brakes, you should also obtain an Air Brake endorsement. To do this, pass the official Air Brake knowledge test. (You can take the Air Brake knowledge test online.)Once you pass the Class 3 knowledge and signs tests, you must submit a Routine Medical Form about your medical status to any Digital Government and Service NL location. Once the form is approved, you may obtain a Class 3 learner’s licence, which will allow you to practice commercial driving under supervision.Once you feel ready, you may take the road test for a commercial driver’s licence. You must take the road test in a Class 3 vehicle. If the vehicle has air brakes, you must have an Air Brake endorsement.Digital Government and Service NL has not published a general commercial driver’s licence manual, although it has published an official Air Brake Manual. The final chapter of the NL Driver’s Handbook does have some general information about commercial driving, but that’s all. Want more intensive knowledge training in Class 3 driving than this? We can help!This practice test is the first of our three Newfoundland and Labrador Class 3 Knowledge practice tests. We designed these practice tests to help aspiring commercial drivers like you pass their Class 3 knowledge tests – on their first try. This practice test covers the basics of operating Class 3 vehicles and the meanings of some road signs. 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 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
5 out of 5 • 3 votes
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.
In determining how well your air brake system works, which is NOT a significant factor?
Which colour is the trailer supply line?
When is a pre-trip inspection required?
What gauges should you check after starting your vehicle?
Why are there two service tanks in a modern air brake system?
What is the purpose of the National Safety Code?
What does this sign mean?
In Canada, how many classes of dangerous goods are there?
What must you do at a stop sign with a painted stop line?
When brakes become overheated, they also become
What does this sign mean?
Your vehicle is equipped with an air brake system, including a belt-driven air compressor. How do you check for correct belt tension?
What does this sign mean?
Before driving down a grade (hill), you should
What does this sign mean?
Your vehicle has tandem drive axles and is equipped with an inter-axle differential. You should NOT use it if
What does this sign mean?
What is a commercial vehicle's danger zone?
This sign indicates that you may park for one hour
What is the first step of the pre-trip inspection?
In a vehicle equipped with air brakes, the pushrod stroke occurs when compressed air enters the
What is the Gross Vehicle Weight Rating (GVWR)?
Driving a commercial vehicle on the road is
In an air brake system, what does a governor do?
Where are the air brake chambers located?
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 ZakhareuskiUpdated 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.
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