Free Alabama CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the CDL double/triple trailer endorsement test, make sure to know it! Our Alabama CDL practice test has the same questions as the real exam which is based on the Alabama CDL manual. It covers most of the subject areas on the Double/Triple Trailers Test such as pulling double and triple trailers, the risk of rollover, managing space, and special considerations when hauling multiple trailers. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, you can take this CDL practice test an unlimited number of times to make sure you learn all the questions. Let’s try our Free Alabama CDL Double/Triple Trailers Practice Test today and pass your CDL exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 AL commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AL CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What should you do when the low air pressure warning comes on?
2.
What is the function of a stop light switch?
3.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
4.
On older vehicles, a low air pressure warning signal comes on at what psi?
5.
A front brake limiting valve ______.
6.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
7.
Air tanks need to be drained ______.
8.
How should the air leakage rate be tested?
9.
The most common type of foundation brake is?
10.
Automatic air tanks _______.
11.
After coupling the converter dolly to the first trailer, the pintle hook should be:
12.
When checking that air is flowing to all trailers,what is used to provide air to the supply lines?
13.
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
14.
Wedge brakes and disc brakes are ______ than s-cam brakes.
15.
Which of the following is the most common reason brakes fade?
16.
It's important that a warning signal comes on before the air pressure in the tank falls below _______.
17.
What does the air compressor governor control?
18.
To apply the parking brakes, you should _______.
19.
Why should you never push the brake pedal down when the spring brakes are on?
20.
Where are the brake drums located?