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Z Endorsement Test – Quiz 02

Ontario Air Brake Test 02

Air brake systems on a trailer have which of these components?
a.
b.
c.
d.

Question 1 of 30

What is a 'gladhand'?
a.
b.
c.
d.

Question 2 of 30

The spring brake controls are normally what color?
a.
b.
c.
d.

Question 3 of 30

You have finished your delivery and unhitched from your trailer. What should you do with the trailer supply valve?
a.
b.
c.
d.

Question 4 of 30

On which of these vehicles are you most likely to find a DD3 Safety Actuator?
a.
b.
c.
d.

Question 5 of 30

Which of these statements applies to spring brakes?
a.
b.
c.
d.

Question 6 of 30

When the tractor protection valve is opened, it allows air to...?
a.
b.
c.
d.

Question 7 of 30

The trailer supply valve will close automatically when air pressure drops below...?
a.
b.
c.
d.

Question 8 of 30

Which of these trailers can be towed without waiting for the service brake air tanks to fill?
a.
b.
c.
d.

Question 9 of 30

If trailer lines are cross connected, which of these may happen with the trailer brakes?
a.
b.
c.
d.

Question 10 of 30

How many connections must be made to join a trailer's brake system to the brake system of the towing vehicle?
a.
b.
c.
d.

Question 11 of 30

When attaching a trailer, the supply line is usually color-coded what color?
a.
b.
c.
d.

Question 12 of 30

A caging bolt is used by a technician to do what?
a.
b.
c.
d.

Question 13 of 30

Which of these is not the type of foundation brake system?
a.
b.
c.
d.

Question 14 of 30

What do the foundation components consist of?
a.
b.
c.
d.

Question 15 of 30

Which of these can cause the air pressure to drop and so activate the spring brakes?
a.
b.
c.
d.

Question 16 of 30

To release the spring brakes on a vehicle with a DD3 Safety Actuator, you must operate the control valve and then do what?
a.
b.
c.
d.

Question 17 of 30

The trailer supply valve is usually operated from the dashboard by a control with a knob of which color?
a.
b.
c.
d.

Question 18 of 30

Trailer service brakes can be operated by...?
a.
b.
c.
d.

Question 19 of 30

In the majority of air brake systems, the parking and emergency brakes are applied by doing what to the control?
a.
b.
c.
d.

Question 20 of 30

If you notice that your brake system has caging bolts on it, what should you do?
a.
b.
c.
d.

Question 21 of 30

Service line couplings are usually color coded which color?
a.
b.
c.
d.

Question 22 of 30

If a spring brake priority trailer loses air to the service brakes, the trailer can only be braked by...?
a.
b.
c.
d.

Question 23 of 30

The tractor protection valve on towing vehicles is designed to do what?
a.
b.
c.
d.

Question 24 of 30

A DD3 Safety Actuator has how many air line connections?
a.
b.
c.
d.

Question 25 of 30

Trailer brake subsystems must apply the spring brakes automatically when the trailer supply line pressure drops below...?
a.
b.
c.
d.

Question 26 of 30

Trailer hand valves can be used for...?
a.
b.
c.
d.

Question 27 of 30

“S” cam brakes use which sort of system?
a.
b.
c.
d.

Question 28 of 30

Trailer brake subsystems supply air...?
a.
b.
c.
d.

Question 29 of 30

You should ascertain whether a trailer uses a spring brake or service brake priority system by...?
a.
b.
c.
d.

Question 30 of 30


 

It is recommended that you take a practice test before you take the actual written test. Please note, however, that this is not the actual test, and you will not receive your license if you pass this sample practice test. If you’re getting your commercial licence, you've come to the right place.

Z Endorsement Test

Our free Z endorsement test questions and answers will prepare you to pass Ontario official Air Brakes knowledge test. To begin your career in trucking, you must obtain your Ontario Class A or Class D Truck Driver 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 are required to complete a written knowledge test successfully. Making certain 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 prepared.

Passing your air brake test doesn’t have to be a stressful experience. Follow this important tip, and you should pass the test with no problem.

Break It Down – Study efficiently by breaking the Air Brake Handbook down into smaller, easier to study parts. It will seem less overwhelming, and you will learn the information faster. Remember to take a short break in between studying sections to give your mind a rest. This will keep you relaxed, and you will retain more information.