Home
Study Plan
Get Pro
Review

Free Arizona CDL Combination Vehicles Practice Test 2023

You have to pass the Arizona CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for good source material for your coming CDL test? You are in the right place. Our Arizona CDL practice test is a great resource for beginners to practice. 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 Practice Test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Arizona CDL manual so you can be sure that the information in our CDL practice 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 Arizona CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 AZ commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AZ CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
Study now
List of questions
1.
The air lines on a combination vehicle are often colored to prevent them from mixing up. The emergency line is _____, the service line is _________.
2.
A tractor with a _______ trailer, requires the most amount of stopping distance.
3.
The trailer air supply control knob is:
4.
The higher the center of gravity of your truck, the:
5.
To unlock the fifth wheel, the locking lever should be placed in the ______ position.
6.
A function of the tractor protection valve is:
7.
Spring brakes are not required on trailers and dollies built before:
8.
The shut-off valves at the back of the last trailer should be:
9.
The tractor protection valve will close, and the trailer emergency brakes will come on when there is a major leak in the _____ brake line.
10.
The trailer service brakes should be tested with the hand control, and controlled during normal operation by:
11.
If you have to enter another traffic lane to complete a wide turn, you should:
12.
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
13.
When checking the trailer emergency brakes, the tractor protection control valve should be placed in what position?
14.
Trailers will have an ABS malfunction lamp:
15.
The emergency air line is usually what color?
16.
When uncoupling, the tractor should:
17.
Crack-the-whip effect occurs when:
18.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
19.
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
20.
Where should the tractor be when you inspect the landing gear after uncoupling the trailer?
Arizona Hazmat TestArizona General Knowledge TestArizona School Bus TestArizona Doubles/ Triples Trailers TestArizona Combination Vehicles TestArizona Air Brake TestArizona Tanker Vehicles TestArizona Passenger Vehicles TestArizona Pre-Trip Test