Free Maryland CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 MD commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MD CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The most common type of foundation brakes are:
2.
The stop light switch:
3.
How far should manual slack adjusters move before they need to be adjusted?
4.
Air tanks need to be drained ______.
5.
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?
6.
In case of a low air situation, the spring brakes should come on at:
7.
Emergency stab braking is:
8.
Under normal conditions, in order to engage the parking brakes the driver should:
9.
On a long or steep downgrade, the foot brakes should be used:
10.
In a controlled braking emergency:
11.
While applying the brakes, what tells the driver how much air pressure is being used?
12.
The low air pressure warning signal indicates:
13.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
14.
When you release the brakes and reduce the air pressure what makes up for that air loss?
15.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
16.
If you must make an emergency stop, you should brake so you:
17.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than _____ of the width of the friction area.
18.
The manual adjustment of automatic slack adjusters is:
19.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
20.
Brake drums (or discs) must not have cracks longer than ____ the width of the friction area.
21.
All of the following apply if the low air pressure warning signal does not work except:
22.
Pushing the brake pedal down harder __________.
23.
Brake drums or discs _______.
24.
What is a wig wag ?
25.
Vehicles with ABS have malfunction lamps that are what color?