Free Ohio CDL Air Brakes Practice Test 2022

Do you need an Ohio Air Brakes endorsement or an L endorsement for your commercial driving license? The Ohio CDL Air Brake test has some differences from other endorsements because your license will receive a mark of restriction if you fail the test. So having good preparation before exam day is very necessary. To ensure that our questions are relevant, all of our CDL practice test packs are based on the Ohio CDL Manual. Each question has a detailed explanation for you to thoroughly learn the format and the topic. Don't be afraid of having a restriction on your license. Let’s try our Ohio CDL Practice Test to get ready to pass the Ohio CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 OH commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
OH CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
To test air service brakes you should:
2.
The air compressor stops pumping air at what psi?
3.
All air brake equipped vehicles have:
4.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
5.
In case of a low air situation, the spring brakes should come on at:
6.
Your brakes are fading when:
7.
The supply pressure gauge shows how much pressure:
8.
If you must make an emergency stop, you should brake so you:
9.
Brake fade is caused by:
10.
With air brake vehicles, the parking brake should be used:
11.
Normally during anti-lock braking, the driver:
12.
Which braking system applies and releases the parking brakes when you use the parking brake control?
13.
"Some air brake systems have an alcohol evaporator. What may happen if you don’t keep the proper level of alcohol?"
14.
To check the free play of manual slack adjusters of S-cam brakes, you should park on:
15.
Average stopping distance under normal conditions at 55 mph is:
16.
On newer vehicles what color is the parking brake knob?
17.
The service brake system ________.
18.
Brake linings should not be _______.
19.
Stab braking should only be used:
20.
During a normal drive, the spring brakes are held back by _____.
21.
Air tanks should be drained:
22.
What is the purpose of a supply pressure gauge?
23.
To avoid damaging the brakes, what should you never do while the spring brakes are applied?
24.
In a dual air brake system, one system will typically control the rear brakes, and the other:
25.
What is an alternative name for a brake pedal?