- Updated for January 2025
- Based on 2025 NV commercial driver's license manual
Free Nevada CDL Permit Practice Test: General Knowledge 2025
In the great state of Nevada, the tourism, gaming, and mining sectors have created a demand for commercial drivers. Interstate 15 is one of the most important highways in the western United States for commercial traffic. It runs from San Diego County, California, through Las Vegas. Then it continues northward through Montana into Alberta, Canada. It is heavily used by trucks carrying goods between Southern California and the Rocky Mountain region. Other important commercial routes include Interstate 80 (trucking between the West Coast and the Midwest) and U.S. Route 95 (truck and bus traffic between San Luis, Arizona and Eastport, Idaho at the Canadian border).
If driving on these or other roads as a licensed truck or bus driver is your goal, you have a number of steps to take and requirements to meet before you can obtain a Commercial Driver’s License (CDL). We can help you with one of the most important early steps: passing the official General Knowledge test on commercial driving theory. You must pass this test and meet other requirements to be eligible for a Commercial Learner’s Permit (CLP), which will allow you to practice commercial driving under supervision.
You have likely been advised to study the official Nevada Commercial Driver’s License Manual (Nevada CDL Handbook 2025). The manual does contain all the information on which you’ll be tested. However, not everyone finds it easy to absorb and memorize the material just by reading the manual. If you’re one of those aspiring drivers who would like additional help, we have just the thing.
This free Nevada CDL permit practice test, one of several we offer, will assess your knowledge of commercial driving theory. It’s based on the official CDL manual, just like the official knowledge test, and is up to date as of January, 2025. The 50 multiple-choice questions on this practice test will assess your understanding of such topics as driving maneuvers, cargo management, emergency preparedness, and vehicle components. The practice test differs from the official knowledge test primarily in the extra tools it gives you to help you learn, including an automated assistant that can offer you a hint if you get stuck and an explanation if you still miss a question. Plus, the practice test has no time limit. Take all the time you need to learn the material. If you’re not sure how to answer a question, put it aside momentarily while you try to look up the correct answer in the CDL manual or on the internet. You’ll learn far more by researching the correct answer to the question than by blindly guessing it.
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
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List of questions (classic view)
- Which of the following may get you disqualified from commercial driving?
- How can you determine if your vehicle is equipped with an anti-lock braking system (ABS)?
- An anti-lock braking system (ABS) will
- Why is it important to use a helper when backing?
- What can you do at an accident scene to help avoid another accident?
- To transport cargo safely, which of these are you NOT responsible for?
- On which of the following types of fires should you NOT use a B:C fire extinguisher?
- What is the gross vehicle weight (GVW)?
- What is a common cause of tire fires?
- How often must you stop to check your cargo while on the road?
- If you double your speed, how much more distance will it take to brake to a stop?
- If you are confronted by an aggressive driver, what should you do?
- You don't want to be a distracted driver, so you
- During your pre-trip test, when examining hoses with the instructor, you need to look for
- Which of the following is a key steering component?
- The most important hand signal that you and a helper should agree on is
- Which of the following is NOT something you should check during a trip?
- Do empty trucks have the best braking?
- What is the definition of a hazard?
- Which of the following should you NOT do if you experience a tire failure?
- What is the best way to figure out how many seconds of following distance you have?
- Hazardous materials placards are
- In which of the following two situations should you downshift?
- You should inspect wheel bearing seals for
- When you start to drive down a steep downgrade, which of the following should influence your choice of speed?
- Why should you cover your cargo?
- Total stopping distance equals
- What might happen if you swing wide to the left before you turn right?
- Starting the engine and inspecting the cab involves each of the following tasks EXCEPT
- Where should you place your warning devices if you must stop on a one-way road or divided highway?
- On wet roads, you should reduce your speed by
- Letting the air out of hot tires
- Which of the following statements about retarders are correct?
- Before transporting a sealed load, you must check
- How many tie-downs are required for a 20-foot load?
- If the engine is not overheated, is it completely safe to remove the radiator cap?
- Which is NOT one of the four basic skills that operating a commercial vehicle requires?
- How can you start moving without rolling backward?
- To help you stay alert and safe while driving, you should
- While driving at night, which lights should you use as often as you can?
- Always try to back toward the driver's side because
- You should put the starter switch key into your pocket while you perform the pre-trip inspection because
- If you are traveling at 55 mph in a 30-foot vehicle, you should leave how many seconds of following distance?
- How long does it take a typical tractor-trailer to clear a double railroad track?
- For how long will you lose your CDL driving privileges if you are convicted of a second DUI offense in either a CMV or your private vehicle?
- It has just reached freezing. Which of the following areas may be slippery?
- To maintain alertness on your trips, you should
- What will help a drunk sober up?
- Which of these is NOT part of the basic method for shifting up?
- The minimum tread depth for front tires is
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