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.
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
2.
In case of emergency when driving a vehicle equipped with dual parking control valves, you should:
3.
An air compressor can be cooled by _______.
4.
During normal driving, spring brakes are usually held back by:
5.
Under normal conditions, in order to engage the parking brakes the driver should:
6.
An air brake system is fully charged at what psi?
7.
Emergency stab braking is:
8.
While applying the brakes, what tells the driver how much air pressure is being used?
9.
To make sure that the spring brakes come on automatically, do all of the following except:
10.
Where is the modulating control valve located on some vehicles?
11.
When the engine is off and the parking brake released, a single vehicle air loss rate should be less than ________ psi in one minute.
12.
When brakes are applied, the brake shoes will press against the:
13.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
14.
All of the following are factors in total stopping distance except:
15.
If your truck has a dual air brake system, and one of the systems is low on pressure:
16.
Which of these is NOT a proper time to apply the parking brakes?
17.
Pressing and releasing the brake pedal unnecessarily:
18.
To stop the vehicle, the brake shoes and linings are pushed against:
19.
You should avoid using the parking brake when _______.
20.
Brake drums should not have cracks longer than what length?
21.
The safety valve in the air compressor tank is set to open at _____.
22.
On large buses low pressure warning devices usually signal at ______.
23.
How often should alcohol containers be checked during cold weather?
24.
The parking brake should be used:
25.
What is a wig wag ?