Free Maine CDL Double/Triple Trailers Practice Test 2023

Do you know how to pair double or triple trailers? If you are planning to take the Maine CDL double/triple trailer endorsement test, make sure to know it! Our Maine CDL Practice Test has the same questions as the real exam which is based on the Maine 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 Maine 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 2021 ME commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ME CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
Which is true when checking air flow to all trailers?
What is the purpose of a front-brake limiting valve?
The air compressor governor stops air from pumping when it reaches the "cut-out" level or around generally _________.
How can you be sure you supplied air to a second trailer?
If air supply drops when driving, the tractor protection valve ________.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
The most efficient way to drive down a long grade is to ________.
An air brake is made up of which of the following braking systems?
When uncoupling twin trailers you should park:
Automatic air tanks _______.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
If you want to couple a second trailer to your combination vehicle, secure it by using:
When the safety valve releases air this indicates ___________.
Why should you check the brake adjustment often?
The tractor protection valve should pop out when air pressure falls to:
Where is compressed air stored?
When checking that air is flowing to all trailers, what is used to provide air to the supply lines?
If you have manual transmission _________.
What affects the stopping distance for air brakes?
Why should you not drive your vehicle if the air pressure does not build up quickly enough?