Free Oklahoma CDL Combination Vehicles Practice Test 2023

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 2021 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
To prevent moisture from entering the electrical cable when disconnected:
A tractor with a _______ trailer, requires the most amount of stopping distance.
One good way to prevent rollover is:
When inspecting the coupling area, all of the following are required except:
You have coupled with a semitrailer, where should you put the iron trailer supports before driving away?
The trailer service brakes should be tested with the hand control, and controlled during normal operation by:
Compared to a straight truck or bus, there are ______ things to inspect in combination vehicles.
Before coupling or uncoupling, the trailer wheels should always be:
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
When unlocking the fifth wheel in Step 6, all of the following apply except:
When uncoupling, the tractor should:
When parking trailers without spring brakes, it is very important to:
If the spring brakes are not released when you pushed the trailer air supply valve you should:
Trailer landing gear:
A fifth wheel in proper position for coupling will have:
What will happen if the air lines are crossed when you hook up to an old trailer?
When backing a tractor under a trailer you should:
When uncoupling the trailer, after you shut off the trailer air supply and lock the trailer brakes, you should:
The safety latch for the fifth wheel locking lever must be _____ for a coupling to be complete.
Where should the tractor be when you inspect the landing gear after uncoupling the trailer?