Free Delaware CDL Combination Vehicles Practice Test 2023

You have to pass the CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Delaware CDL Practice test source for your coming CDL test? You are in the right place. Our CDL 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. The Practice Test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Delaware 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 Delaware CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 DE commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
DE CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
One good way to prevent rollover is:
When inspecting the coupling area, all of the following are required, EXCEPT:
Hose couplers are also referred to as:
The iron trailer supports are up and the trailer is resting on the tractor. Make sure:
When traveling under 40 mph, how much distance should you leave, at minimum, from the car in front of you?
Supplied by the service line from the tractor, each trailer or dolly has its own:
When you get ready to back under a semitrailer you should line up:
To make coupling and uncoupling a loaded trailer easier:
You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is:
When pulling trailers:
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
When should you use the hand valve to park a combination vehicle?
The emergency air line controls the emergency brakes on combination vehicles, and:
The tractor should be positioned to back under the trailer:
Converter dollies:
A fifth wheel in proper position for coupling will have:
To stop a trailer skid you should:
At the back of trailer used to tow other trailers are shut-off valves, also called:
Where should the tractor be when you inspect the landing gear after uncoupling the trailer?
The front trailer supports are up and the trailer is resting on the tractor. Make sure: