Free Alaska CDL Air Brakes Practice Test 2022

Our CDL practice tests:
Based on 2022 AK commercial driver's license manual
Perfect for first-time, renewal applicants
AK CDL Air Brakes Test format:
25 questions
80% passing score
List of questions
1.
The safety valve discharges automatically at the pressure of:
2.
Air tanks need to be drained ______.
3.
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.
4.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
5.
The application pressure gauge shows how much air pressure you:
6.
While applying the brakes, what tells the driver how much air pressure is being used?
7.
With air brake vehicles, the parking brake should be used:
8.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
9.
If you must make an emergency stop, you should brake so you:
10.
11.
After the initial pressure drop, air leakage for combination vehicles should be less than:
12.
To stop the vehicle, the brake shoes and linings are pushed against:
13.
All of the following apply if the low air pressure warning signal does not work except:
14.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
15.
You should avoid using the parking brake when _______.
16.
Why does a heavily loaded vehicle need a longer distance to stop?
17.
Some vehicles are equipped with a separate air tank used specifically to release the spring brakes in an emergency, called a:
18.
The braking power of the spring brakes ______.
19.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
20.
Brake drums or discs _______.
21.
During a normal drive, the spring brakes are held back by _____.
22.
What does the air compressor governor control?
23.
The parking brake should be used:
24.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
25.
In a dual air brake system, one system will typically control the rear brakes, and the other: