Free Maryland CDL Combination Vehicles Practice Test 2022

You have to pass the Maryland CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Maryland 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 Maryland 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 Maryland CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2022 MD commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MD CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
Which of the following is part of the electrical and air lines coupling inspection?
2.
To prevent moisture from entering the electrical cable when disconnected:
3.
After supplying air to the trailer, how should you check for crossed air lines?
4.
When inspecting the coupling area, all of the following are required except:
5.
How much space should be allowed between the upper and lower fifth wheel after coupling?
6.
For proper hose coupling, lines are often color-coded. Service lines are usually:
7.
The air leakage rate for a combination vehicle (engine off, brakes on) should not be more than _____ psi per minute.
8.
The tractor protection valve will close, and the trailer emergency brakes will come on when there is a major leak in the _____ brake line.
9.
There are two things that a driver can do to prevent a rollover. They are: (1) keep the cargo as close to the ground as possible and (2):
10.
After you lock the kingpin into the fifth wheel, you should check the connection by:
11.
To help prevent rollover, keep the center of gravity of the load as low as possible, and:
12.
If the service line comes apart while you are driving a combination vehicle, but the emergency line stays together, what will happen right away?
13.
The trailer hand valve should be used:
14.
To help release the fifth wheel locking lever:
15.
To stop other drivers from passing you on the right when turning wide:
16.
When checking the trailer emergency brakes, the tractor protection control valve should be placed in what position?
17.
How should you test the tractor-semitrailer connection for security?
18.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
19.
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
20.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer: