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.
You should not back a tractor under a trailer until the air system is:
2.
After supplying air to the trailer, how should you check for crossed air lines?
3.
The trailer air supply control knob is:
4.
Over 50% of truck driver accident deaths are caused by:
5.
After you lock the kingpin into the fifth wheel, you should check the connection by:
6.
When you get ready to back under a semitrailer you should line up:
7.
You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is:
8.
Off-tracking or cheating causes which of these to follow the wider path while making a turn?
9.
Tractor with a ______ trailer requires the shortest amount of stopping distance.
10.
When coupling, trailer height should:
11.
A driver crosses the air lines when hooking up to an old trailer. What will happen?
12.
The best and earliest way to recognize that your trailer has started to skid is:
13.
When coupling or uncoupling, all of these apply to the trailer except:
14.
Why should you be sure that the fifth wheel plate is greased as required?
15.
To test the tractor protection valve, pump the brakes with the engine off until the trailer air supply knob pops out, usually at:
16.
Air and electrical lines from the tractor to the trailer should be:
17.
When coupling, the proper position of the fifth wheel is:
18.
You are coupling a tractor to the semitrailer; you have connected the airlines. Before backing under the trailer, you should:
19.
The front trailer supports are up and the trailer is resting on the tractor. Make sure:
20.
A specific item to check on a sliding fifth wheel is: