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.
Semi-trailers made before 1975 that are equipped with air brakes:
2.
After supplying air to the trailer, how should you check for crossed air lines?
3.
You should not back a tractor under a trailer until the air system is:
4.
If your trailer goes into a skid, you should do all of the following except:
5.
The shut-off valves at the back of the last trailer should be:
6.
When uncoupling, make sure that the parking area:
7.
When you are uncoupling a loaded trailer, you should lower the landing gear until it:
8.
After you lock the kingpin into the fifth wheel, you should check the connection by:
9.
If the service line comes apart while you are driving a combination vehicle, but the emergency line stays together, what will happen right away?
10.
You are driving a combination vehicle when the trailer breaks away, pulling apart both air lines. You expect the trailer brakes to come on and:
11.
What is the term for a commercial vehicle habit of swinging wide on turns?
12.
To help release the fifth wheel locking lever:
13.
The locking jaws should be around:
14.
When you notice that your trailer has lost traction and is going into a skid, you should:
15.
There are two things that a driver can do to prevent a rollover: They are: (1) go slow around turns, and (2):
16.
You are coupling a tractor to a semitrailer and have backed up, but are not under it. What should you hook up before backing under?
17.
You are about to back your tractor under a semitrailer. The trailer is at the right height when the:
18.
You supply air to the trailer tanks by:
19.
All of these are part of the final 3 steps of uncoupling the trailer except:
20.
You are coupling a tractor to the semitrailer; you have connected the airlines. Before backing under the trailer, you should: