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.
While driving behind another vehicle, under good conditions, you should allow at least one second between your vehicle and the vehicle ahead for each ____ feet of your vehicle length.
2.
How much space should be allowed between the upper and lower fifth wheel after coupling?
3.
The tractor protection valve will close, and the trailer emergency brakes will come on when there is a major leak in the _____ brake line.
4.
Supplied by the service line from the tractor, each trailer or dolly has its own:
5.
The trailer service brakes should be tested with the hand control, and controlled during normal operation by:
6.
There are two things that a driver can do to prevent a rollover. They are: (1) keep the cargo as close to the ground as possible and (2):
7.
To make coupling and uncoupling a loaded trailer easier:
8.
In order to allow the trailer brakes to be applied more quickly, what is connected to the service air line?
9.
A major leak in the trailer emergency line will cause:
10.
When unlocking the fifth wheel in Step 6, all of the following apply except:
11.
When checking the trailer emergency brakes, the tractor protection control valve should be placed in what position?
12.
How much space should there be between the upper and lower fifth wheel?
13.
To test the trailer brakes before driving, use the hand valve or the:
14.
The hand valve should be used:
15.
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
16.
Triples combinations have a rearward amplification of:
17.
When coupling, the proper position of the fifth wheel is:
18.
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
19.
Glad hands are usually connecting which of these?
20.
While checking if the trailer is securely coupled to the tractor, the landing gears should be: