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Commercial Class A Drivers License Practice Test

Pass the CDL Class A Test on your very first try! Take our FREE Practice Test for the ultimate test preparation. Our practice tests have 25 multiple choice questions straight from the handbook and give immediate feedback.

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Mistakes Allowed
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CDL Class A Commercial Permit Practice Test 1

For the last two and a half decades, US drivers have been mandated to possess a valid commercial driver's license (CDL) to operate certain commercial motor vehicles (CMVs). A CMV is any type of vehicle used to ferry passengers or goods for compensation.

These vehicle types require a special skill set to operate and can only be entrusted to safety-conscious drivers. Such drivers must undergo rigorous training to be equipped with the necessary theoretical and practical knowledge to safely and responsibly operate commercial motor vehicles.

Are you looking to build and establish your career as a truck driver? Whether you end up specializing in tractor-trailer buses, tanker trucks, 18-wheelers, flatbed trailers, double or triple trailers, you must undergo some level of testing to obtain your CDL. The specific CDL needed for the aforementioned vehicles is the Class A Commercial Driving Permit.

The Federal Motor Carrier Safety Administration (FMCSA) has laid the testing standards for licensing of CDL holders at the federal level. A CMV driver can only obtain a valid CDL after passing a written knowledge test and skills test specific to the CMV they wish to operate.

The good news is that we have made it easier for you to pass the knowledge test and jump right into your truck driving career. We do this by providing free CDL Class A Commercial Permit Practice Tests to prepare you for the official DMV test. Our test questions are enriched with authentic material straight from the CDL handbook to ensure you pass on your very first try.

What is a CDL Class A Knowledge Test?

This is a written test comprising 30-50 multiple choice questions examining your knowledge of things like traffic signs, laws, rules, and regulations. The test is issued by the DMV to CMV drivers applying for a Class A Commercial Driving Permit. You must pass the test to obtain your CDL.

Where do I start?

Start where it is safe and free. Start with adequate test preparation. Take advantage of our free Knowledge Practice Test to garner enough exposure to the DMV test material.

What do you need to know before you start?

You must understand that failing the knowledge test at the DMV sends you right back to square one. You have to retake the test until you pass. That's why the free practice tests are paramount for your journey to secure your CDL.

Once you pass and acquire the CDL, you must learn how to maintain it and remain credible in the job market. Avoid CDL restrictions as much as possible since these will hinder your career growth. Make sure you pass the Air Brakes Knowledge Test and take your Skills Test in a vehicle with a full air brake system to stay away from the 'L' restriction.

Additionally, avoid taking your Skills Test in a vehicle with a hydraulic brake system or automatic transmission to evade the 'Z' and 'E' restrictions respectively.

What's on the test?

The Knowledge Test contains 30 multiple questions drawn from the CDL handbook. You must hit the 80% pass mark with only 6 mistakes allowed to pass.

Who needs the test?

Any CMV driver intending to operate any combination of vehicles weighing more than 26,000 pounds including towed vehicles. That includes tractor-trailers, tank vehicles, flatbeds, livestock carriers, and other truck and trailer combinations.

What must you have ready to take the test?

To take this test you must:

  • Be at least 21 years of age
  • Provide identity proof
  • Take an eye test
  • Pay applicable fees
  • Present proof of US residency

CDL Sample Test Questions

A high center of gravity means _______.
  • Much of the load's weight is carried high up off the road.
  • Much of the load's weight is carried low off the road.
  • The vehicle is very heavy.
  • None of the listed answers.
A trailer air supply that is in good working condition will pop out when the air pressure falls into what range?
  • 75-85 psi.
  • 20-45 psi.
  • 100-125 psi.
  • 65-90 psi.
  • 50-60 psi.
Air tanks need to be drained ______.
  • Manually if or when automatic devices fail.
  • At the end of each day of driving.
  • To keep sludge from clogging the brake system.
  • All of the listed answers.
As you check that the steering box is mounted securely and not leaking, you should look for any missing ________.
  • Cotter keys.
  • Nuts.
  • Bolts.
  • All of the listed answers.
Dead couplers prevent water and dirt from getting into the air lines and ______.
  • The couplers.
  • Safety chamber.
  • Oil chamber.
  • None of the listed answers.


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