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Free Nebraska CDL Combination Practice Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 NE commercial driver's license manualAvailable in EN, ES
25questions
5mistakes allowed
80%passing score
Want to drive semi-trucks or tractor-trailers for a living in Nebraska? Need some help to pass the CDL Combination Vehicles knowledge test? You’ve certainly come to the right place! Don’t be embarrassed if you haven’t mastered the subject of driving combination vehicles just by reading the official Nebraska Commercial Driver License Manual (Nebraska CDL Handbook 2025). It’s not unusual. That’s why it’s wise to supplement your reading of this study guide with other study tools.
This free Nebraska CDL Combination practice test is based on the official manual and is up to date as of January 2025. Practicing with it will reinforce what you’ve learned in the manual and make you more accustomed to taking tests on it. To make your learning process easier, each of the 25 practice questions comes with a helpful hint and an explanation of the correct answer. The practice questions and answers on this test will assess your knowledge of such topics as combination braking systems, combination driving techniques, coupling and uncoupling, and pre-trip inspections. Keep practicing your knowledge with as many of our practice tests as you can, as often as you can, until you feel confident that you’re ready to ace the official Combination Vehicles knowledge test.
OK, so you passed the Combination Vehicles knowledge test. Congratulations! What happens now? Well, make sure you also passed the CDL General Knowledge test and your medical examination. These are the main requirements to obtain a Commercial Learner’s Permit (CLP). With this credential and your passing score on the Combination Vehicles knowledge test, you can start practicing combination truck driving to pass the skills test for your CDL. There are three classes of CDL: Class A, Class B, and Class C. Class A is the usual class for driving heavy combination vehicles like semi-trucks and tractor-trailers.
Once you get a CDL of the appropriate class and all the endorsements you need, you should be able to find work as a combination truck driver. The most important trucking route in Nebraska is Interstate 80, an east-west transcontinental freeway. Other major Interstate trucking routes are Interstate 29, which connects Nebraska to the Dakotas and Missouri, and Interstate 76, a key route into Colorado. Some other roads are also important trucking routes. U.S. Route 77 connects Nebraska to Kansas and the Dakotas. U.S. Route 81, a key route for agricultural transport, also connects the state to Kansas and the Dakotas. Nebraska Highways 2 and 92 are also important routes for agricultural transport.
Perfect for
- First-time NE CDL and CLP applicants
- CDL holders adding endorsements
- NE CDL renewal applicants
What to expect on the actual exam
| How many questions | 20 |
|---|---|
| How many correct answers to pass | 16 |
| Passing score | 80% |
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List of questions (classic view)
- After you lock the kingpin into the fifth wheel, how should you check the connection?
- After you connect the air lines but before you back under the trailer, you should
- Which statement best illustrates the "crack-the-whip" effect?
- When you inspect the landing gear after uncoupling the trailer, where should the tractor be?
- What is the safest way to turn right from a two-way road?
- To drive a triple combination vehicle, you must have
- To prevent a rollover, cargo should be
- Combination vehicles take longer to stop when they are empty than when they are fully loaded, because
- If your vehicle gets stuck on a railroad track, you should
- Low-slung vehicles can be risky at railroad crossings because
- On a double or triple vehicle, which wheels offtrack the most?
- When you're pulling doubles or triples, the shut-off valves should always be
- On a trailer, where is the yellow antilock brake (ABS) malfunction lamp located?
- Even before antilock braking systems (ABS) were required, some vehicles already had them. How can you check if your vehicle has ABS?
- An antilock braking system (ABS) is useful
- After coupling, make sure that the air lines are not crossed. How should you do this?
- During uncoupling, you should disconnect the electrical cable and
- Before you start to uncouple, you must
- You can confirm that air is going to all brakes in your trailers by
- To uncouple a loaded trailer, after the landing gear has made firm contact with the ground, you should
- If the trailer has antilock brakes (ABS) but the tractor doesn't,
- To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
- If your test of the tractor protection valve is successful,
- The tractor protection valve is designed to close automatically if the air pressure falls into the pressure range specified by the manufacturer, typically
- As part of your vehicle inspection test, if your vehicle is equipped with air brakes and has a trailer, you will inspect the air connections between the truck or tractor and the trailer. Make sure that the ________ are locked in place and free of damage or air leaks.
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