Home
Study Plan
Get Pro
Review

Free Alaska CDL Combination Vehicles Practice Test 2023

You have to pass the CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Alaska CDL practice test source for your coming CDL test? You are in the right place. Our CDL practice test is a great resource for beginners. The Alaska CDL Combination Vehicles Practice 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. They cover topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Alaska DMV 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 Alaska 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.
Air brake equipped trailers made before 1975:
2.
When you open the emergency shut-off valve at the back of the last trailer after supplying air to trailer(s):
3.
To unlock the fifth wheel, the locking lever should be placed in the ______ position.
4.
A function of the tractor protection valve is:
5.
You have coupled with a semitrailer, where should you put the iron trailer supports before driving away?
6.
The tractor protection valve will close, and the trailer emergency brakes will come on when there is a major leak in the _____ brake line.
7.
When uncoupling, make sure that the parking area:
8.
You are driving a combination vehicle when the trailer breaks away, pulling apart both air lines. You expect the trailer brakes to come on and:
9.
Improperly greased or lubricated fifth wheels will cause:
10.
Converter dollies:
11.
The best and earliest way to recognize that your trailer has started to skid is ____.
12.
How much space should there be between the upper and lower fifth wheel?
13.
You are coupling a tractor to a semitrailer and have backed up, but are not under it. What should you hook up before backing under?
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.
Driving with an empty trailer:
16.
You are about to back your tractor under a semitrailer. The trailer is at the right height when the:
17.
To test the tractor protection valve, pump the brakes with the engine off until the trailer air supply knob pops out, usually at:
18.
Before getting out to inspect the coupling, secure the vehicle by putting transmission in neutral, shutting off engine and taking the key with you, and:
19.
While driving, you should use the trailer hand valve when?
20.
Why should you lock the tractor glad hands to each other (or dummy couplers) when you are not towing a trailer?
Alaska Hazmat TestAlaska Pre-Trip TestAlaska Passenger Vehicles TestAlaska Doubles/ Triples Trailers TestAlaska Air Brake TestAlaska Tanker Vehicles TestAlaska General Knowledge TestAlaska Combination Vehicles TestAlaska School Bus Test