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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.
Semi-trailers made before 1975 that are equipped with air brakes:
2.
While driving behind another vehicle, under good conditions, you should allow at least one second between your vehicle and the vehicle ahead for each ____ feet of your vehicle length.
3.
Hose couplers are also referred to as:
4.
Supplied by the service line from the tractor, each trailer or dolly has its own:
5.
When connecting the glad hands, press the two seals with the couplers together at what degree to each other?
6.
Which part of the kingpin should the locking jaw close around?
7.
A major leak in the trailer emergency line will cause:
8.
The locking jaws should be around:
9.
The emergency air line is usually what color?
10.
When uncoupling, the tractor should:
11.
If the spring brakes are not released when you pushed the trailer air supply valve you should:
12.
There are two things that a driver can do to prevent a rollover: They are: (1) go slow around turns, and (2):
13.
A fifth wheel in proper position for coupling will have:
14.
In normal driving, some drivers use the hand valve before the brake pedal to prevent a jack-knife. Which of the statements is true?
15.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
16.
At the back of trailer used to tow other trailers are shut-off valves, also called:
17.
While driving, you should use the trailer hand valve when?
18.
A specific item to check on a sliding fifth wheel is:
19.
The front trailer supports are up and the trailer is resting on the tractor. Make sure:
20.
Why should you lock the tractor glad hands to each other (or dummy couplers) when you are not towing a 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