Free Louisiana CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Louisiana CDL double/triple trailer endorsement test, make sure to know it! Our Louisiana CDL Practice Test has the same questions as the real exam which is based on the Louisiana CDL Book. 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 Louisiana CDL Double/Triple Trailers Practice Test today and pass your CDL endorsement exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 LA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
LA CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the purpose of a front-brake limiting valve?
2.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
3.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
4.
The most efficient way to drive down a long grade is to ________.
5.
On older vehicles, a low air pressure warning signal comes on at what psi?
6.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
7.
When uncoupling twin trailers you should park:
8.
Brake drums should not have cracks longer than what length?
9.
Automatic air tanks _______.
10.
When the safety valve releases air this indicates ___________.
11.
The tractor protection valve should pop out when air pressure falls to:
12.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
13.
When driving doubles or triples, for safer handling which trailer should be at the rear?
14.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
15.
What is a front brake limiting valve?
16.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
17.
To apply the parking brakes, you should _______.
18.
If the air compressor does not have its own oil supply, how is it lubricated?
19.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
20.
Why should you not drive your vehicle if the air pressure does not build up quickly enough?