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FREE CDL PRACTICE TEST 2022 In order to pass your CDL exam, you can use our free CDL practice tests (updated for 2022). Our CDL study test with detailed practice questions and answers will help you prepare thoroughly for the official CDL test. What’s a CDL (Commercial Driver’s License)? A higher level of expertise and […]

April 25, 2022


In order to pass your CDL exam, you can use our free CDL practice tests (updated for 2022). Our CDL study test with detailed practice questions and answers will help you prepare thoroughly for the official CDL test.

What’s a CDL (Commercial Driver’s License)?

A higher level of expertise and understanding is required to operate a commercial motor vehicle. To be authorized to drive any form of a motor vehicle on public roads, most drivers must receive a commercial driver’s license (CDL) from their home state.

Applicants must pass both skills and knowledge tests in order to pass a CDL test. Additionally, if you intend to pursue a driving job involving special vehicles such as triple-trailers or tankers, you must pass the CDL endorsement test to achieve a higher level.

Normally, the CDL permit test requirement is based on the national regulations, however, each state could add additional limits. The applicant’s age, driving record, and physical and mental health are all important considerations…

Which CDL sections should you study?

It depends on what type of vehicles you are looking for, the following table will help you to determine the CDL tests you take.






School buses

General knowledge







Air brakes









Double and triple










Hazardous Materials





School buses




CDL Class

The federal government divides CDLs into three categories, each of which is associated with a specific type of vehicle:

Class A (combination vehicles): the vehicle’s gross combination weight must be at least 26,001 pounds, and the weight being towed must be greater than 10.000 pounds.

Class B (Heavy straight vehicles): any single vehicle weighing at least 26,001 pounds, or any similar vehicle towing other than a vehicle with a GVWR (gross vehicle weight rating) of less than 10.000 pounds.

Any single or combination vehicles that are not included in class A or class B are classified as class C (small vehicles).

To get a CDL class, which CDL subtest should you take?


Class A

Class B

Class C

General knowledge





Air brakes




You can start with CDL A practice test right on this page.

How to get a CDL?

These are CDL requirements:

  • You must be at least 18 years of age to participate.
  • Have a valid driver’s license (or learner permit) in the state where you intend to apply.
  • Pass the written knowledge test for the CDL.
  • Get your physical and finish your medical exam.
  • Get your fingerprints taken by law enforcement with ID verification, or go to a licensed third-party vendor for digital fingerprinting.
  • To take the skills test, go to a DMV office and pay the required cost.

CDL written knowledge test

To get your CDL license, you must take and pass one or more written tests, it’s up to the CDL class you are looking for and the endorsements that you are required.

General knowledge

Taken by all applicants, there are 50 multiple-choice questions in the CDL general knowledge test which focus on rules and requirements, safe driving, safe delivery of cargo, and pre-trip vehicle inspections. 

Combination vehicles

The combination vehicles test has 20 questions, which cover driving safely, air brakes, antilock brake systems, coupling and uncoupling, and inspecting a combination vehicle.

Air brakes

In case you are preparing to operate a truck, bus, or pull a trailer with air brakes, you will need to take the air brake CDL test. This test contains 25 multiple-choice questions, which concentrate on parts of an air brake system, dual air brakes, inspecting air brake systems, and using air brakes.

Tanker endorsement

If you are planning to drive a vehicle over 26000 pounds that are used to transport liquids or gases material (that don’t have to be hazardous), you need to pass the tanker endorsement. In addition, this endorsement is only required in case the vehicle is a class A or B over 119 gallons which are counted permanently, or a portable greater than 1000 gallons.

Double and triple-trailer endorsement

Pulling a double or triple trailer, you must pass the double/triple endorsement test. There are a total of 20 multiple-choice questions that inspect your knowledge about driving safely with double and triple trailers.

Hazardous materials endorsement

Hazardous materials are explosives, flammable and combustible liquids, and any materials that the shipper considers hazardous. You must complete 30 multiple-choice questions covering regulations, communication rules, loading or unloading, bulk packing marking, driving and parking, and emergencies.

School bus endorsement

A school bus endorsement is used to transport students to school or authorized school activities. If the school bus doesn’t transport students, school bus endorsement isn’t required. Note that, before you apply for school bus endorsement, you must obtain passenger endorsement.

This CDL endorsement will access you to the following topics: danger zones, use of mirrors, loading or unloading, emergency exit and evacuation, railroad-highway crossings, students management, and anti-lock braking system.

Passenger endorsement

Passenger endorsement holders are allowed to carry 16 or more people, including the driver. The test has 20 multiple-choice questions on the vehicle inspection, loading and trip start, after-trip vehicle inspection, prohibited activities, and use of brake-door interlocks.

How Many Times Should I Take the CDL Prep Test 2022?

We recommend that you take the test until you are completely familiar and have a score high enough to give you confidence in your next CDL exam. You’ll be closer to passing your CDL knowledge test if you get a high score, so practice as much as you can. You won’t have to pay anything, and you won’t even have to register. Good luck with your CDL test now and in the future. Drive carefully!

How Is the CDL Test Practice Structured?

Consider it your personal CDL study guide for each endorsement. Every practice test includes multiple-choice questions in the same format as the CDL exam in your state. These questions are written in the same style as those found on your state’s official knowledge exam. The majority of the questions have a suggestion to assist you in selecting the correct answer. Each right answer is accompanied by a detailed explanation that will help you better understand the question’s subject. We want you to be able to appropriately answer questions about those topics, even if they are phrased differently. You can read more about the CDL test structure in our blog section.

Why Should You Use Our CDL Practice Exam?

These are the benefits of using our CDL prep app:

  • Having a personal study plan
  • Studying anywhere at any time even without an internet connection
  • Practicing with 3 different test modes can help you level up quickly
  • Experiencing cool dark mode
  • No sign-up is needed. However, if you have an account, you can sync your data between the web and the mobile app.

Which Topics Are Covered in our free CDL practice test?

This practice exam covers a broad range of subjects that you’ll need to be familiar with in order to pass your CDL knowledge test and work in the trucking industry. Aggressive drivers, braking tactics, cargo safety, distracted drivers, drunk driving regulations, emergency readiness, road and weather conditions, and safe backing are among the subjects covered. No, air brakes, combination vehicles, or dangerous items were not overlooked! We offer our own specialist practice tests on air brakes, combination vehicles, and hazardous materials, just as states often need you to pass specialized knowledge tests in those areas. You’ll be on your road to getting your Class A, Class B, or Class C CDL by studying our CDL practice tests.

How to apply for a Commercial Driver’s License (CDL)

To operate commercial vehicles such as tractor-trailers, semi-trucks, dump trucks, and passenger buses, you’ll need a commercial driver’s license (including school buses). To apply for a CDL, you must be at least 21 years old. You can apply for a CDL at a local DMV office to become a truck driver. Learn more about the three classes of CDLs that govern the types of commercial motor vehicles you’re allowed to drive: Class A, Class B, and Class C. Obtaining a CDL is subject to strict federal restrictions, as well as state-specific criteria. Your state will construct a written knowledge exam and a driving skills test for you to pass.


4.1 How many questions are on the CDL test?

The CDL test includes 50 multiple-choice questions. But you might experience more questions when you are planning to earn some endorsements to operate special vehicles. Take the CDL practice tests to familiarize yourself with the format real test.

4.2 How do I get my CDL permit with CDL practice tests?

The best way to obtain a CDL license on the first attempt is by practicing with the CDL prep online. At CDL-prep, we suggest numerous free practice questions which are suitable for your levels and explained clearly after each one.

4.3 How much does it cost to take CDL permit test?

A standard CDL license is expected to pay between $75 and $ 100, which may vary from state to state. In addition, for the endorsement, you are expected to pay from $5 to $10 for each one.

To save money, take free CDL tests online to hone your knowledge and pass all CDL tests.

Don’t hesitate anymore! Start your CDL test study with our best CDL practice test right now!