Free Nebraska CDL Combination Vehicles Practice Test 2023

You have to pass the Nebraska CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good CDL Practice Test Nebraska 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 Nebraska 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 Nebraska CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 NE commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NE CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
Semi-trailers made before 1975 that are equipped with air brakes:
To unlock the fifth wheel, the locking lever should be placed in the ______ position.
Supplied by the service line from the tractor, each trailer or dolly has its own:
After you lock the kingpin into the fifth wheel, you should check the connection by:
Rearward amplification is a major cause of:
Before coupling or uncoupling, the trailer wheels should always be:
A major leak in the trailer emergency line will cause:
The trailer hand valve should be used:
If the wheels of the trailer lock up and the trailer swings around, it could cause a:
When you notice that your trailer has lost traction and is going into a skid, you should:
When uncoupling, the tractor should:
Crack-the-whip effect occurs when:
To test the trailer brakes before driving, use the hand valve or the:
Why should you be sure that the fifth wheel plate is greased as required?
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
What will happen if the air lines are crossed when you hook up to an old trailer?
When backing a tractor under a trailer you should:
When uncoupling the trailer, after you shut off the trailer air supply and lock the trailer brakes, you should:
Triples combinations have a rearward amplification of:
At the back of trailer used to tow other trailers are shut-off valves, also called: