Commercial drivers in British Columbia, Canada are required to follow specific traffic rules to ensure safety and avoid accidents.


BC Commercial Driver Test 01

1 / 30

An air brake endorsement is required for which of the following?

2 / 30

What is brake lag time?

3 / 30

Under which of the following conditions is an engine retarder most efficient?

4 / 30

A limousine service has a fleet of vehicles, the largest of which are limousines with a capacity for 10 passengers, not including the driver. This means that, at times, the company's drivers may be required to drive a vehicle containing 11 persons (10 passengers and the driver). What class of licence must the company’s drivers hold to ensure that they are able to drive the limousines in the company's fleet regardless of the number of passengers?

5 / 30

During normal brake use, brake components typically heat up to 120

6 / 30

You are driving an 8-axle tractor-trailer combination that has 16 brakes. If one or two of the brakes are not properly adjusted, which of the following is likely to occur?

7 / 30

While you practise under your learner's licence, your supervisor must sit beside you. What if (as in the case of a school bus), there is no seat beside you? Where must your supervisor sit?

8 / 30

Carriers must do which of the following to check your driving record?

9 / 30

You are driving a truck and you pick up a load that doubles the weight of the truck. What effect does the change in weight have on the power required to stop the truck?

10 / 30

Complete the following: the faster you are traveling in a vehicle, ________________________:

11 / 30

A Class 1, 2, 3, or 4 learner's licence allows you to practise driving with a supervisor. Which of the following two requirements must your supervisor meet?

12 / 30

You are driving a taxi, and you wish to follow the 'two-second rule' for keeping a safe distance between you and the car in front of you. How is the 'two-second rule' implemented?

13 / 30

During extremely wet conditions, or after driving through water, what is the best way to dry out your brakes?

14 / 30

You and a friend are driving two different vehicles that are the same weight. You, however, are traveling at twice the speed of your friend. How much more stopping power will your vehicle require compared to that of your friend?

15 / 30

For how long are air brake knowledge test results valid? In other words, within what amount of time will you have to re-take the air brake knowledge test if you do not have the endorsement placed on your licence within that time?

16 / 30

ABS (Anti-lock Braking System) focuses on preventing brakes from locking during heavy braking. What is ATC, an optional addition to ABS, and what does ATC focus on?

17 / 30

If, while travelling down a hill, your speed increases above your chosen speed, what should you do?

18 / 30

Because water can reduce braking efficiency, you should avoid driving through large amounts of water whenever possible. If you have to drive through water, you want to minimize the amount of water entering the brake drum and shoes. Which of the following is the best, and safest, way to accomplish this?

19 / 30

If you fail to pass the knowledge test for an air brake endorsement after three (3) attempts, what must you do?

20 / 30

You are a Class 2 licenced driver, and you have been hired to drive a bus for a band. There is not enough room inside, however, for the band equipment. The bus, therefore, will need to tow a trailer filled with band equipment. Under your Class 2 licence, the permitted weight of that trailer is limited to 4600 kg EXCEPT in which of the following circumstances?

21 / 30

When emergency braking in a vehicle equipped with ABS (Anti-lock Braking System), what should your response be to brake noise, pedal movement, and shudder?

22 / 30

The slope or grade of the road has an impact on a vehicle's stopping distance because of the effect of gravity. Which of the following is correct concerning that impact?

23 / 30

You are driving a school bus. After you load your passengers, the weight of the school bus is doubled. If, after loading, you also double your speed, what effect do both those changes (doubled weight and doubled speed) have on your stopping power? In other words, how much more stopping power will be required after those two changes?

24 / 30

If you are operating a combination vehicle, but not all of the vehicles have ABS (Anti-lock Braking System), how should you brake in an emergency?

25 / 30

If you are practicing under a Class 1 or Class 3 learner's licence, which of the following are the only person(s) (besides you) allowed in the vehicle while you are practicing?

26 / 30

What is 'brake fade'?

27 / 30

For how long is a learner's licence for a Class 1, 2, 3, or 4 licence valid?

28 / 30

You are driving a vehicle equipped with ABS (Anti-lock Braking System). What is the proper use of that system when braking in an emergency?

29 / 30

Which of the following do you need to do when stopping a vehicle?

30 / 30

You should be able to travel downhill without using your service brakes when you have done which of the following?

Your score is


One such rule is the mandatory use of safety belts by all occupants of commercial vehicles. In addition, commercial drivers must adhere to speed limits posted on highways and local roads, which vary depending on the type of vehicle and the location. Moreover, commercial drivers must always yield to pedestrians and follow traffic signals and signs. They must also maintain a safe distance from other vehicles on the road, especially in adverse weather conditions. Finally, commercial drivers in BC cannot use handheld electronic devices while driving, which is against the law. These traffic rules ensure the safety of the commercial driver and the passengers in the vehicle and contribute to the community’s overall safety.

Remember, our tests are similar to the official BC professional drivers test you must take and pass to attain your commercial driver’s licence. No practice test can be the same as the official one, as they change often. Still, by practicing with them in conjunction with your “driving commercial vehicles – a guide for professional drivers” handbook, you will be well on your way to attaining your CDL in a short period.