Free Oregon CDL Combination Vehicles Practice Test 2022

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

Our CDL practice tests:
Based on 2022 OR commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
OR CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
One good way to prevent rollover is:
2.
After the trailer has been coupled to the tractor, the tractor protection control valve should be placed in what position?
3.
The higher the center of gravity of your truck, the:
4.
Hose couplers are also referred to as:
5.
The shut-off valves at the back of the last trailer should be:
6.
To prevent water and dirt from entering the air system, hose couplers can be attached to dummy couplers or:
7.
When connecting the glad hands, press the two seals with the couplers together at what degree to each other?
8.
Before coupling or uncoupling, the trailer wheels should always be:
9.
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
10.
What is the term for a commercial vehicle habit of swinging wide on turns?
11.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
12.
To help release the fifth wheel locking lever:
13.
When should you use the hand valve to park a combination vehicle?
14.
A fifth wheel in proper position for coupling will have:
15.
After connecting the air lines but before backing under the trailer you should:
16.
At the back of trailer used to tow other trailers are shut-off valves, also called:
17.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer:
18.
Why should you lock the tractor glad hands to each other (or dummy couplers) when you are not towing a trailer?
19.
The front trailer supports are up and the trailer is resting on the tractor. Make sure:
20.
In case of landing gear failure while pulling out from under it, you should: