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 is the "cut-in" pressure for most air compressor governors?
2.
What is the purpose of an antilock braking system (ABS)?
3.
Air brakes take longer to stop than hydraulic brakes because _______.
4.
You will test that the trailer service brakes are working by:
5.
How often should alcohol containers be checked during cold weather?
6.
The braking power of the spring brakes ______.
7.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
8.
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true except:
9.
During a normal drive, the spring brakes are held back by _____.
10.
A danger of a malfunctioning tractor protection valve is:
11.
If the air compressor has its own oil supply you should do what before driving?
12.
When driving doubles or triples, for safer handling which trailer should be at the rear?
13.
Why should you never leave your vehicle unattended without applying the parking brakes?
14.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
15.
Why should air tanks be drained completely?
16.
When performing the controlled braking method for an emergency stop, you are _________.
17.
Water and oil _______.
18.
The last step to uncouple a converter dolly is:
19.
When uncoupling the rear trailer, which of these should be done first?
20.
A converter dolly is used: