ONTARIO AIR BRAKE PRACTICE TEST 03

With our free practice tests, you can improve your chances of passing the Ontario Air Brake test and obtaining your commercial driver’s license, enabling you to advance your career in the trucking industry.

Ontario Air Brake Test 03

What does the 'S' shape on the one end of the camshaft operate in the 'S' cam system?

a. The push rod

b. The brake drum

c. The brake shoes

d. The slack adjuster

Question 1 of 30

If a vehicle fails to comply with the specific requirements for the safe operation of commercial motor vehicles as set out in the Ontario Highway Traffic Act, the driver, operator and/or owner of the vehicle must...?

a. In sure it is fixed within a month of the defect being notified

b. Only use it during daylight hours

c. Keep it off the road until it is fixed

d. Not use it on high-speed highways

Question 2 of 30

Which of these parts would you find on a disk air brake system?

a. Calipers

b. Spiders

c. Brake shoes

d. Backing plates

Question 3 of 30

When towing a trailer, you will usually be able to tell if it is employing ABS by...?

a. Checking for lights in your mirror

b. Checking for lights on your dashboard

c. Listening for audible warnings

d. The way the handling feels

Question 4 of 30

If a vehicle is found to be noncompliant with the safe operation requirements in the Ontario Highway Traffic Act, which of these sanctions may be applied?

a. Fines for the owning company

b. Any/all of them

c. Fines for the driver

d. Impoundment of vehicle

Question 5 of 30

For safety, the full capacity of the brake system must be available...?

a. When going downhill

b. At all times

c. When traveling at high speed

d. When traveling in urban traffic

Question 6 of 30

Brake fade is caused by...?

a. Hard acceleration

b. Wet conditions

c. Cold weather

d. Components heating

Question 7 of 30

In the 'S' cam brake system, what does a brake spider hold?

a. The brake drum

b. The brake shoes

c. The return spring

d. The camshaft

Question 8 of 30

When you double your speed, the demand on your brakes to come to a stop will increase by how much?

a. Five times

b. Four times

c. Three times

d. Two times

Question 9 of 30

When conducting an inspection of an air brake system, the vehicle should be parked...?

a. On a level surface

b. Any of these

c. Facing downhill

d. Facing uphill

Question 10 of 30

The best way to reduce harsh brake use is to...?

a. The exact in and out of traffic

b. Use your horn effectively

c. Drive right on the speed limit

d. Leave safe following distances

Question 11 of 30

Wedge brake systems are designed to be...?

a. Self sealing

b. Self operating

c. Self lubricating

d. Self adjusting

Question 12 of 30

How are wedge brake systems different to other drum brake systems?

a. Larger brake shoes

b. No exposed linkage

c. Made of different materials

d. More of them per wheel

Question 13 of 30

Which of these is essential to ensure that full braking force is available?

a. Proper brake adjustment

b. Drivers with strong legs

c. Good road surfaces

d. Large capacity air tanks

Question 14 of 30

Which of these circumstances is not likely to increase the operating temperature of the brakes?

a. Driving on expressways

b. Driving in stop and go traffic

c. Driving down steep hills

d. Making emergency stops

Question 15 of 30

The Ontario Highway Traffic Act requires that vehicles with air brakes must be checked at least once...?

a. A month

b. A day

c. A week

d. Every two days

Question 16 of 30

Which of these significantly decreases the brake force produced at the wheel?

a. Cold air temperatures

b. Overextension of the brake chamber pushrod

c. High pressure in the compressed air tanks

d. Damp road conditions

Question 17 of 30

Which of these is not a part of a disc air brake system?

a. A brake pushrod

b. A brake drum

c. A brake caliper

d. A brake rotor

Question 18 of 30

Which of these parts would you not find on an “S” cam air brake system?

a.Rollers

b.Slack adjusters

c.Rotors

d.Camshaft

Question 19 of 30

What does an ABS system do?

a. Shortens stopping distances

b. All of these things

c. Prevents wheel lock

d. Increases brake power

Question 20 of 30

A vehicle should have wheel chocks or blocks securing it in place during inspection if...?

a. The driver leaves the cab under any circumstances

b. Any of these apply

c. The driver is not within 50 m of the vehicle

d. The driver leaves the cab without applying the parking brake

Question 21 of 30

When making an inspection of an air brake system, drivers should wear...?

a. All of these things

b. Bump caps

c. Safety glasses

d. Steel toed shoes or boots

Question 22 of 30

Inspections of air brake systems should begin by checking...?

a. The air compressor

b. The foundation brake components

c. The brake pedal

d. The air lines

Question 23 of 30

Brakes that are out of adjustment can be detected by...?

a. A reliable inspection method

b. Visual checks by the driver

c. Testing on the road

d. Any of these methods

Question 24 of 30

In extreme cases, brake fade can lead to...?

a. Inability to stop

b. Steering failure

c. Tire blowout

d. Engine seizure

Question 25 of 30

You will place abnormal demand on your brake system if you...?

a. Drive too much on long highways

b. Exceed the weight capacity of your vehicle

c. Drive too much in urban traffic

d. Exceed the speed limit of the road you are on

Question 26 of 30

When making any inspection, drivers should be on guard for...?

a. Leaving vehicle parts

b. Compressed air exhausts

c. Movement of the vehicle

d. All of these things

Question 27 of 30

Which of these parts would you not find on a wedge air brake system?

a. Spiders

b. Brake drums

c. Brake shoes

d. Pushrods

Question 28 of 30

Excessive brake temperature can be avoided in vehicles which are fitted with...?

a. Any of these

b. Auxiliary brakes

c. Engine brakes

d. Retarders

Question 29 of 30

Which of these will not be a factor on how your vehicle's brakes work?

a. Your weight

b. The weight of your vehicle

c. Your speed

d. Brake adjustment

Question 30 of 30

AZ Practice Test

Our free AZ practice test questions and answers will prepare you to pass Ontario’s official Air Brakes knowledge test. To begin your career in trucking, you must obtain your Ontario Class A or Class D Truck Driver’s Licence. The appropriate CDL endorsements you will need are based on the type of trucking career you plan to pursue. To obtain these endorsements, you must complete a written knowledge test successfully. Making sure you are adequately prepared for your written knowledge test will prevent you from wasting time and money. Taking practice CDL tests is the best way to get ready.

Passing your air brake test doesn’t have to be a stressful experience. Follow this important tip, and you should pass the test without a problem.

Take a Practice Test – After studying for a bit and feeling comfortable with the material, take an AZ practice test. This will help you identify any issues early on and let you know what areas need work. Do not get upset if you do poorly on the practice test. Learn from your mistakes, and fix the areas you have trouble with.