Free Maine CDL Combination Vehicles Practice Test 2022

You have to pass the Maine CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Maine CDL Practice Test source for your coming CDL test? You are in the right place. Our practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. Our CDL practice test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Maine CDL Manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free Maine CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2022 ME commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ME CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
When you open the emergency shut-off valve at the back of the last trailer after supplying air to trailer(s):
2.
The air leakage rate for a combination vehicle (engine off, brakes on) should not be more than _____ psi per minute.
3.
How much space should be allowed between the upper and lower fifth wheel after coupling?
4.
After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. This is done by:
5.
After you lock the kingpin into the fifth wheel, you should check the connection by:
6.
In order to allow the trailer brakes to be applied more quickly, what is connected to the service air line?
7.
Before coupling or uncoupling, the trailer wheels should always be:
8.
There are two things that a driver can do to prevent a rollover. They are: (1) go slow around turns, and (2):
9.
Improperly greased or lubricated fifth wheels will cause:
10.
Converter dollies:
11.
The emergency air line is usually what color?
12.
How much space should there be between the upper and lower fifth wheel?
13.
To stop a trailer skid you should:
14.
You supply air to the trailer tanks by:
15.
Driving with an empty trailer:
16.
When backing a tractor under a trailer you should:
17.
When uncoupling the trailer, after you shut off the trailer air supply and lock the trailer brakes, you should:
18.
To test the tractor protection valve, pump the brakes with the engine off until the trailer air supply knob pops out, usually at:
19.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer:
20.
Before getting out to inspect the coupling, secure the vehicle by putting transmission in neutral, shutting off engine and taking the key with you, and: