Free Idaho CDL Air Brakes Practice Test 2022

Do you need an Idaho Air Brakes endorsement or an L endorsement for your commercial driving license? The Idaho 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 Idaho 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 Idaho CDL practice test to get ready to pass the Idaho CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 ID commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ID CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The stop light switch:
2.
Modern air brakes combine three different systems. They are the service, the parking, and the _____ brakes.
3.
Air tanks need to be drained ______.
4.
The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about ____ below the posted speed and release your brake.
5.
A dual air brake system ________.
6.
To test the vehicle's service brakes, move the vehicle:
7.
Your truck has a dual air system and one of the systems loses its pressure. What will happen?
8.
While applying the brakes, what tells the driver how much air pressure is being used?
9.
With air brake vehicles, the parking brake should be used:
10.
The type of brakes that clamp the rotor between the brake shoes is:
11.
When does the air compressor governor allow air to start pumping?
12.
When your brake's main air pressure is lost ________.
13.
When brakes are applied, the brake shoes will press against the:
14.
Which of these is NOT a proper time to apply the parking brakes?
15.
The parking brake should not be used when wet in freezing temperatures, or:
16.
What tells the driver how much air pressure is in the air tanks?
17.
Pressing and releasing the brake pedal unnecessarily:
18.
The most common problem found in roadside inspections is:
19.
On newer vehicles what color is the parking brake knob?
20.
The most common type of foundation brake is?
21.
Why should you drain water from compressed air tanks?
22.
Brake linings should not be _______.
23.
What is used to put alcohol into the system and reduce ice risk?
24.
What is a wig wag ?
25.
If your brakes are wet, what should you do to dry them quicker?