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Free Alabama CDL Combination Vehicles Practice Test 2023

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

Our CDL practice tests:
Based on 2021 AK commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AK CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
Study now
List of questions
1.
After supplying air to the trailer, how should you check for crossed air lines?
2.
The air lines on a combination vehicle are often colored to prevent them from mixing up. The emergency line is _____, the service line is _________.
3.
One good way to prevent rollover is:
4.
The air leakage rate for a combination vehicle (engine off, brakes on) should not be more than _____ psi per minute.
5.
The shut-off valves at the back of the last trailer should be:
6.
When uncoupling, make sure that the parking area:
7.
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):
8.
When you are uncoupling a loaded trailer, you should lower the landing gear until it:
9.
If you have to enter another traffic lane to complete a wide turn, you should:
10.
If the service line comes apart while you are driving a combination vehicle, but the emergency line stays together, what will happen right away?
11.
When pulling trailers:
12.
If the wheels of the trailer lock up and the trailer swings around, it could cause a:
13.
When parking trailers without spring brakes, it is very important to:
14.
How much space should there be between the upper and lower fifth wheel?
15.
Crack-the-whip effect occurs when:
16.
To stop a trailer skid you should:
17.
You have a major leak in the service line, and you put on the brakes. Service air will escape and cause the:
18.
Triples combinations have a rearward amplification of:
19.
You are coupling a tractor to the semitrailer; you have connected the airlines. Before backing under the trailer, you should:
20.
If you cannot complete your turn without entering another traffic lane you should:
Alabama Passenger Vehicles TestAlabama Pre-Trip TestAlabama Tanker Vehicles TestAlabama Air Brake TestAlabama Combination Vehicles TestAlabama General Knowledge TestAlabama School Bus TestAlabama Hazmat TestAlabama Doubles/ Triples Trailers Test