Free Massachusetts CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Massachusetts CDL double/triple trailer endorsement test, make sure to know it! Our Massachusetts CDL Practice Test has the same questions as the real exam which is based on the MA 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 Massachusetts 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 MA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MA CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
The part of the combination vehicle most likely to turn over is the:
2.
What is the purpose of a modulating control valve?
3.
What should you do when the low air pressure warning comes on?
4.
Which is true when checking air flow to all trailers?
5.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
6.
Air brakes take longer to stop than hydraulic brakes because _______.
7.
When connecting converter dolly to the front trailer, support gear should be:
8.
On large buses low pressure warning devices usually signal at ______.
9.
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
10.
When coupling or uncoupling, trailer or dolly wheel should always be:
11.
An air brake is made up of which of the following braking systems?
12.
When uncoupling twin trailers you should park:
13.
What distinguishes a wedge brake from other types of brakes?
14.
When checking that air is flowing to all trailers,what is used to provide air to the supply lines?
15.
To apply the parking brakes, you should _______.
16.
If the air compressor does not have its own oil supply, how is it lubricated?
17.
Where are the brake drums located?
18.
You are doing a walk around inspection of a double or triple trailer rig. You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _________.
19.
Why should you not drive your vehicle if the air pressure does not build up quickly enough?
20.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?