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.
A tractor with a _______ trailer, requires the most amount of stopping distance.
2.
After the trailer has been coupled to the tractor, the tractor protection control valve should be placed in what position?
3.
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.
4.
How much space should be allowed between the upper and lower fifth wheel after coupling?
5.
The trailer service brakes should be tested with the hand control, and controlled during normal operation by:
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.
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):
8.
When backing under the trailer, air lines:
9.
When coupling, trailer height should:
10.
Improperly greased or lubricated fifth wheels will cause:
11.
If the wheels of the trailer lock up and the trailer swings around, it could cause a:
12.
If the spring brakes are not released when you pushed the trailer air supply valve you should:
13.
To test the trailer brakes before driving, use the hand valve or the:
14.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
15.
Driving with an empty trailer:
16.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
17.
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
18.
The hand valve should be used:
19.
When backing under the trailer, do all of the following except:
20.
When coupling, the proper position of the fifth wheel is: