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.
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.
The higher the center of gravity of your truck, the:
3.
The shut-off valves at the back of the last trailer should be:
4.
The iron trailer supports are up and the trailer is resting on the tractor. Make sure:
5.
The tractor protection valve will close, and the trailer emergency brakes will come on when there is a major leak in the _____ brake line.
6.
After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. This is done by:
7.
Supplied by the service line from the tractor, each trailer or dolly has its own:
8.
When connecting the glad hands, press the two seals with the couplers together at what degree to each other?
9.
To help prevent rollover, keep the center of gravity of the load as low as possible, and:
10.
To make coupling and uncoupling a loaded trailer easier:
11.
The emergency air line controls the emergency brakes on combination vehicles, and:
12.
To stop other drivers from passing you on the right when turning wide:
13.
When you notice that your trailer has lost traction and is going into a skid, you should:
14.
Converter dollies:
15.
How should you test the tractor-semitrailer connection for security?
16.
To stop a trailer skid you should:
17.
In normal driving, some drivers use the hand valve before the brake pedal to prevent a jack-knife. Which of the statements is true?
18.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
19.
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
20.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer: