Cdl class a practice test general knowledge

The knowledge test is available in 4 languages (interpreters aren't allowed):

  • English
  • Spanish
  • Russian
  • Serbian–Croatian

Make an appointment to take the knowledge test at a driver licensing office location that offers testing. The test fee covers 1 attempt at each knowledge test taken within 90 days of the receipt.

You must pass the knowledge test and get a Commercial Learner's Permit (CLP):

  • Before you can take the skills test.
  • Any time you upgrade your CDL by:
    • A higher commercial class
    • Adding endorsements that require a skills test:
      • Passenger endorsement
      • School bus endorsement
      • Tank vehicle endorsement (only if testing and or training in tank vehicle)
    • Removing an air brake restriction

You're required to take the knowledge test any time you:

  • Transfer
  • Add
  • Renew a hazardous material endorsement (HME). See hazardous materials endorsement (hazmat) for more information on HME requirements.

Knowledge test scores are valid for:

  • 180 days from the date passed.
  • Another 180 days, if you renew your CLP within 30 days of your original CLP expiring. Double, triple, and hazardous materials cannot be renewed with CLP and expire 180 days from the date passed.
CDL knowledge tests
Knowledge testTotal questionsPassing scoreSkills test needed
CDL general knowledge (A, B, & C) 50 40 Yes
CDL combination (A) 20 16 Yes
Passenger 20 16 Yes
Air brakes 25 20 Yes
School bus 20 16 Yes
Double/triple 20 16 No
Tank vehicle 20 16 No, unless you're taking your skills test or training in a commercial tank vehicle, then you must take the knowledge test before we can issue your CLP.
Hazardous materials 30 24 No

How to prepare

  • Study the Commercial driver guide to prepare for the test. The guide is only available in English and contains all the information you'll need to pass the test. In the first chapter you will find a table titled "What sections should you study?" This table indicates with an "x" which section(s) you should study before taking the tests.
  • You may also take the practice test for a sample of the types of questions that will be on the test.

Penalties for trying to get a CDL fraudulently could include:

  • Cancellation of your driver license.
  • Having to wait up to 1 year before you can apply again for a CDL.

Questions? Need help?

Call us: 360.902.3900 (TTY: Call 711)

Do you want to get your commercial driver's license and start a new career in driving cargo and passengers? Or do you want to receive a state-issued certified/recognized commercial driver's license? Then look no more, since our CDL Study Guide will teach you everything you need to know regarding applying for and getting a CDL . To operate any professional motorized vehicle that delivers persons or goods from one point to another, a commercial driver's license (CDL) is required. Without a commercial driver's license, it is prohibited to operate a business vehicle and transport goods and services from one location to another (CDL) . A CDL may only be gained after many procedures have been completed, the most challenging of which is undoubtedly the written exam. This unique guide is filled with detailed information, questions and answers, and a perfect illustration that will set you on your way to passing your CDL exam and getting you a CDL. In this guide, you will learn about how to drive safely, how to read and pass your CDL examination excellently, how to transport cargo safely, how to transport passengers safely and so much more.
Here is a snippet of what you stand to learn:

  • What is Commercial Driver License Test?
  • Types of CDL
  • What is a CDL license?
  • What is a hardship license?
  • How to get a Class A license
  • How to get a Class B license
  • How to get a Class C license
  • Tips and tricks to passing a CDL examination
  • Medical Documentation Requirements
  • International Registration Plan International Fuel Tax Agreement
  • How to apply for a CDL license
  • Driving Safely
  • Inspection of Vehicle
  • Rules and regulations for CDL drivers
  • Basic Control of Your Vehicle
  • Aggressive Drivers/Road Rage
  • Driving in Very Hot Weather
  • Driving Emergencies
  • Mountain Driving
  • Railroad-Highway Crossing
  • Antilock Braking System (ABS)
  • Skid Control and Recovery
  • Accident Procedures
  • Hazardous Material Rules for all Commercial Drivers
  • Transporting Passengers Safely
  • After-Trip Inspection
  • Use of Brakes-Door Interlocks
  • Loading and Trip Start
  • Prohibited Practices
  • Transporting Cargo Safely
  • Inspecting Cargo
  • Inspecting Air Brake Systems
  • Using Air Brakes
  • Combination Vehicles
  • Driving Combination Vehicles Safely
  • Antilock Brake Systems
  • Combination Vehicle Air Brakes
  • Inspecting a Combination Vehicle
  • Doubles and Triples
  • Inspecting Doubles and Triples
  • Pulling Double/Triple Trailers
  • Doubles/Triples Air Brake Check
  • Inspecting Tank Vehicles
  • Emergency Exit and Evacuation
  • Railroad-Highway Crossings
  • Pre-Trip Vehicle Inspection Test
  • External Inspection (All Vehicles)
  • Taking the CDL Pre-Trip Inspection Test
  • Basic Vehicle Control Skills Test
  • CDL Practice Test
  • Frequently asked Questions and Answers
  • And many more….

This is just a few of what is contained in this Manual, and you can Download FREE with Kindle Unlimited
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How many questions is on the CDL General Knowledge test pa?

The General Knowledge Exam given by the Department of Transportation (DOT) in Pennsylvania is 50 tricky multiple-choice questions long. You have only one hour and if you get less than an 80% (that's 40 questions right) you fail the test.

What are the 3 tests for CDL permit in Florida?

General Knowledge Test..
Air Brakes Test (if applicable).
Applicable exams for desired endorsements..

How many questions are on the CDL permit test in Florida?

The General Knowledge test for your Commercial Driver's License for the state of Florida is about to start. You only have an hour and you have to get 40 of the 50 questions correct or you fail.

How many questions are on the CDL permit test in Alabama?

The CDL general knowledge test is required to be taken by all CDL applicants. The Alabama CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%).