Free Delaware CDL Combination Vehicles Practice Test 2022

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 2022 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
1.
Which of the following is part of the electrical and air lines coupling inspection?
2.
When a vehicle goes around a corner, the rear wheels follow a different path than the front. This is called:
3.
The likelihood of a fully loaded rig turning over compared to an empty trailer is:
4.
The trailer air supply control knob is:
5.
For proper hose coupling, lines are often color-coded. Service lines are usually:
6.
Spring brakes are not required on trailers and dollies built before:
7.
To prevent water and dirt from entering the air system, hose couplers can be attached to dummy couplers or:
8.
A major leak in the trailer emergency line will cause:
9.
To stop other drivers from passing you on the right when turning wide:
10.
The trailer hand valve should be used:
11.
The emergency air line is usually what color?
12.
Trailer landing gear:
13.
The best and earliest way to recognize that your trailer has started to skid is:
14.
When coupling or uncoupling, all of these apply to the trailer except:
15.
The "rearward amplification" value means:
16.
Rocky mountain doubles have a rearward amplification of about:
17.
To test the tractor protection valve, pump the brakes with the engine off until the trailer air supply knob pops out, usually at:
18.
Triples combinations have a rearward amplification of:
19.
While driving, you should use the trailer hand valve when?
20.
A specific item to check on a sliding fifth wheel is: