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.
Air brake equipped trailers made before 1975:
2.
When a vehicle goes around a corner, the rear wheels follow a different path than the front. This is called:
3.
For proper hose coupling, lines are often color-coded. Service lines are usually:
4.
To prevent water and dirt from entering the air system, hose couplers can be attached to dummy couplers or:
5.
When uncoupling, make sure that the parking area:
6.
If the service line comes apart while you are driving a combination vehicle, but the emergency line stays together, what will happen right away?
7.
When pulling trailers:
8.
Which of these statements is true?
9.
What is the term for a commercial vehicle habit of swinging wide on turns?
10.
Improperly greased or lubricated fifth wheels will cause:
11.
Some of the points for inspecting the coupling include the following except:
12.
All of these are part of the final 3 steps of uncoupling the trailer except:
13.
Rocky mountain doubles have a rearward amplification of about:
14.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
15.
While driving, you should use the trailer hand valve when?
16.
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
17.
If you cannot complete your turn without entering another traffic lane you should:
18.
Glad hands are usually connecting which of these?
19.
In case of landing gear failure while pulling out from under it, you should:
20.
Why should you lock the tractor glad hands to each other (or dummy couplers) when you are not towing a trailer?