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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.
Which of the following is part of the electrical and air lines coupling inspection?
2.
You should not back a tractor under a trailer until the air system is:
3.
After the trailer has been coupled to the tractor, the tractor protection control valve should be placed in what position?
4.
For proper hose coupling, lines are often color-coded. Service lines are usually:
5.
Compared to a straight truck or bus, there are ______ things to inspect in combination vehicles.
6.
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:
7.
Over 50% of truck driver accident deaths are caused by:
8.
When you get ready to back under a semitrailer you should line up:
9.
You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is:
10.
Which of these statements is true?
11.
What is the term for a commercial vehicle habit of swinging wide on turns?
12.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
13.
The trailer hand valve should be used:
14.
The emergency air line controls the emergency brakes on combination vehicles, and:
15.
When should you use the hand valve to park a combination vehicle?
16.
Improperly greased or lubricated fifth wheels will cause:
17.
All of these are part of the final 3 steps of uncoupling the trailer, EXCEPT:
18.
The safety latch for the fifth wheel locking lever must be _____ for a coupling to be complete.
19.
After connecting the air lines but before backing under the trailer you should:
20.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer:
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