Free Oklahoma CDL Combination Vehicles Practice Test 2022

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

Our CDL practice tests:
Based on 2022 OK commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
OK CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
Before you back under a trailer, make sure that:
2.
Which of the following is part of the electrical and air lines coupling inspection?
3.
The likelihood of a fully loaded rig turning over compared to an empty trailer is:
4.
When you open the emergency shut-off valve at the back of the last trailer after supplying air to trailer(s):
5.
A function of the tractor protection valve is:
6.
Spring brakes are not required on trailers and dollies built before:
7.
When traveling under 40 mph, how much distance should you leave, at minimum, from the car in front of you?
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.
If you have to enter another traffic lane to complete a wide turn, you should:
10.
There are two things that a driver can do to prevent a rollover. They are: (1) go slow around turns, and (2):
11.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
12.
The locking jaws should be around:
13.
When should you use the hand valve to park a combination vehicle?
14.
To help release the fifth wheel locking lever:
15.
The tractor should be positioned to back under the trailer:
16.
The emergency air line is usually what color?
17.
How much space should there be between the upper and lower fifth wheel?
18.
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?
19.
You have a major leak in the service line, and you put on the brakes. Service air will escape and cause the:
20.
The hand valve should be used: