Gianni Evangelisti Authored By: Gianni Evangelisti
CDL Practice Tests

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Pass your CDL exam with our free CDL practice tests - updated for 2022! We have assembled hundreds of sample questions and answers, all straight from the official sources. is your ultimate source of CDL practice tests.

Our CDL practice questions include answer explanations and automatic scoring to help you better understand the material you are learning.

If you want to pass the CDL exam, try out a CDL practice test and use our resources as your CDL study guide.

Summary: Take a CDL practice test below to learn what you will be asked on the actual exam.

The questions on the written portion of the CDL exam for all states are based on federal guidelines taken from the same information. Different states will have slightly different regulations, but the general information for all states is the same.

CDL General Knowledge Practice Test

CDL Hazmat Practice Test

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Learn More's sample CDL test questions are a great way to prepare for your CDL permit test. Best yet, our tests require no registration or payment! Our CDL prep resources are constantly updated to stay relevant and keep you informed and ready for your exam.

All of our practice commercial driver’s license tests are categorized based on the actual test outline and are immediately scored at the end of the quiz. Once you are finished with the quiz, you will be presented with a score report which includes a complete explanation and rationale for every question answered incorrectly.

We will be adding more sample CDL test questions in the near future, so please come back often. And if you like these practice questions and think they’d be valuable to others preparing for their CDL permit test, please make sure to share these resources with your friends and colleagues.

Along with our variety of commercial driver’s license practice tests listed above, we’re happy to share some additional resources for our visitors. Create your perfect CDL study guide by combining CDL test practice with flashcards and other interactive methods listed below.

Take a look at the options below:

Resource Notes Provider
1000+ Practice Questions 1000+ practice questions to help you get your CDL.
DMV CDL Practice Test Test questions provided via the Nebraska DMV. Even if you are not from Nebraska, these questions can help. Nebraska DMV
DMV CDL Practice Test Test questions provided via the California DMV. Even if you are not from California, these questions can help. California DMV
CDL General Knowledge Flashcards 316 flashcards reviewing CDL general knowledge topics. Quizlet
CDL Hazmat Flashcards 50 flashcards reviewing CDL hazmat topics. Quizlet
CDL Tanker Flashcards 70 flashcards reviewing CDL tanker topics. Quizlet
CDL Air Brakes Flashcards 81 flashcards reviewing CDL air brake topics. Quizlet
CDL Combination Vehicles Flashcards 70 flahcards reviewing CDL combination vehicle topics. Quizlet
CDL Doubles/Triples Flashcards 40 flashcards reviewing CDL doubles and triples topics. Quizlet
CDL Passenger Transport Flashcards 100 flashcards reviewing CDL passenger transport topics. Quizlet

All of the information you need to pass your CDL exam will be included in your state's CDL manual, so please make sure to study the latest version for your particular state. State CDL manuals will specify eligibility, requirements, and testing procedures.

The manual also acts as a CDL study guide because it covers all of the information that is required to pass your CDL exam. maintains a directory of State CDL manuals. You can also find more information about CDL licensing procedures by visiting your state's license agency.

If you plan on operating a Commercial Motor Vehicle (CMV) then you are required to obtain a Commercial Driver License (CDL). In order to get a CDL, you must first take and pass a general knowledge test, various endorsement tests (depending on the license type you are seeking) and a driving skills test.

The tests that you will take depend on the license classification that you are obtaining (Class A, B, or C) and the type of vehicle that you will be driving (e.g., Tanker, Double/Triple, Passenger Bus).

Each test has different sections. The CDL test questions and answers will vary depending on what license you want to obtain.

To help our visitors, provides an overview of how to get your CDL license.

CDL License Requirements

In general, the CDL test is based on national requirements, although each state may add additional restrictions. CDL license requirements focus on your driving record, age, and health. For more information, you can visit our CDL license requirements page.

You must have a Commercial Driver's License (CDL) if you plan on operating:

  • Any single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more.
  • Combination vehicles that have a gross combination weight rating (GCWR) of 26,001 or more pounds, if the GVWR of the trailer or towed unit is more than 10,000 pounds.
  • Vehicles designed to transport 16 or more passengers (including the driver).
  • Any vehicle which requires hazmat placards or is carrying material listed as a toxin or select agent in 42 CFR Part 73.

To determine the class of CDL license you need, please refer to the following diagram:

Class of CDL

Determining the Required Class of CDL

Note: A bus may be either Class A, B, or C depending on whether the GVWR is over 26,001 pounds or is a combination vehicle.

The CDL prep you need will depend on which license you are hoping to attain. Use the following tables to determine which tests you should study for:

Sections by License Type

Section Class A Class B Class C
General Knowledge X X X
Passenger Transport      
Air Brakes X X X
Combination Vehicles X    

Sections by Endorsement

Section Hazmat Double/
Tank Vehicles Passenger School Bus
General Knowledge   X X X X
Passenger Transport       X  
Air Brakes   X      
Combination Vehicles   X X    
Doubles and Triples   X      
Tank Vehicles     X    
Hazardous Materials X   X    
School Buses         X

You must take and pass one or more knowledge tests to earn your commercial driver's license. The tests you will take depend on the license class you are seeking (e.g., A, B, or C) and the endorsements that you need. These knowledge tests are summarized below:

  • General Knowledge – The general knowledge CDL test is taken by all applicants. The test has 50 multiple choice questions. Major topics of the general knowledge test include: CDL rules and requirements, safe driving, safe transportation of cargo, and pre-trip vehicle inspections.
  • Combination Vehicles – If you want to drive combination vehicles you must take and pass this CDL test section. The combination vehicles test has 20 multiple choice questions. The topics on the combination vehicles test include: driving combination vehicles safely, combination vehicle air brakes, antilock brake systems, coupling and uncoupling, and inspecting a combination vehicle.
  • Air Brakes – If you plan on driving a truck or bus with air brakes, or pull a trailer with air brakes, you will need to take the air brakes CDL test. The air brakes test will have 25 multiple choice questions. Topics on the air brake test include: parts of an air brake system, dual air brakes, inspecting air brake systems, and using air brakes.
  • Tank Endorsement – You are required to have a tank endorsement if you plan on driving a CMW over 26,000 pounds that is used to transport liquid/gaseous materials. The materials do not have to be hazardous. This endorsement is only required if the vehicle is a Class A or B vehicle with a permanently mounted take greater than 119 gallons or a portable greater than 1,000 gallons.
  • Double and Triple Trailer Endorsement – If you plan on pulling double or triple trailers, you are required to pass this endorsement test. There are 20 multiple choice questions that assess your knowledge about driving safely with double and triple trailers. This part of the CDL test includes questions on how to couple and uncouple trailers, pulling double/triple trailers, doubles/triples air brake checks, and inspections.
  • Hazardous Materials Endorsement – Hazardous materials (Hazmat) include explosives, flammable and combustible liquids and any materials that the shipper deems as hazardous. You must obtain a HAZMAT endorsement to operate any size vehicle that requires a HAZMAT placard (as further specified in 49 CFR 383.5). This endorsement test has 30 multiple choice questions covering the following topics: intent of the regulations, communication rules, loading and unloading, bulk packaging marking, driving and parking rules, and emergencies.
  • School Bus Endorsement – Although these regulations may vary from state to state, you are required to have a school bus endorsement if you plan on driving a vehicle that carries 16 or more people, including the driver, that is marked with or displays the words “school bus.” A school bus is used to transport students to or from school or authorized school activities. If the school bus is not transporting students, then a school bus manufacturer, dealer or mechanic is not required to have the endorsement. Before receiving a school bus endorsement, you must qualify for a passenger endorsement. This CDL test will cover the following topics: danger zones, use of mirrors, loading and unloading, emergency exit and evacuation, railroad-highway crossings, student management, antilock braking systems, and special safety considerations.
  • Passenger Endorsement – You will need to obtain a passenger endorsement if you plan on driving any vehicle designed to carry 16 or more persons, including the driver. If the vehicle is a school bus, you will need to obtain an additional school bus endorsement. The passenger transport endorsement CDL test will have 20 multiple choice questions on the following topics: vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.

How can I pass my CDL Test?

One of the best ways to prepare for the CDL test is by taking free practice tests. At Test-Guide, we offer numerous free practice tests to help you succeed!

Which CDL sections should I study?

This mainly depends on which CDL license and endorsements you want/need. Depending on what you choose will alter what you need to study for. Check out the tables provided to see what areas you should be focusing on.

How do I get my CDL license?

There are a couple of important steps when trying to obtain your CDL license. You should determine which CDL license and endorsments you need first. Next you should obtain a commercial learner's permit. Finally, you should get your CDL License. For a complete run though of how to get your CDL, click here.

How many questions are on the CDL permit test?

The CDL general knowledge exam has 50 multiple-choice questions. To pass, you must correctly answer at least 40 questions (80%). Other sections of the CDL exams may vary.

Test-Guide’s CDL prep and CDL study guides are the perfect answer to passing the exam. From general knowledge test questions and answers to the CDL School Bus Practice Test, we have up-to-date and accessible resources for you.

What is the best way to study for the CDL?

We recommend these six steps to pass your CDL Test, no matter what variety you’re hoping to pass:

  1. Review state requirements to take your commercial drivers license exam.
  2. Read your state commercial drivers license manual. (Find yours here.)
  3. Memorize the testing information they offer you.
  4. Take our CDL practice tests or flashcards to advance your learning.
  5. Create your very own CDL prep or CDL study guide to keep up the practice!
  6. Sleep well before your exam and go in focused.

Taking multiple types of CDL practice tests will help prepare you no matter what order the test questions are presented to you. Test-Guide has resources designed to keep you from falling into a pattern.

The sample CDL practice exam questions that we have included above will help you understand which areas you need to work on and let you find ways to improve. So be sure to study your state's CDL manual, take our free CDL practice tests, and review the areas that need a boost. Good Luck!

And if you have any other sources for free CDL practice tests, or CDL study guides, please let us know by contacting us and we can include them above.


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