General Knowledge Practice Test
To get a CDL and drive any type of commercial vehicle, you must take and pass the General Knowledge test. You'll be tested on general trucking knowledge, driving safely and transporting cargo safely, taken from sections 1, 2, and 3 of your state CDL manual. Once again, you MUST pass the official state CDL General Knowledge exam to get your CDL.
Try our free online CDL general knowledge test. It's an absolutely free practice exam for you before you take the real exam found at your state's local DMV testing center to help get your CDL permit. Take this CDL practice test to supplement your truck driver training class and go for a perfect score! Come back as many times as you like to try our other practice exams!
Endorsement Test Overview
You also must pass endorsement tests depending on the type of CMV that you will be driving. The endorsement tests are described below.
Tank endorsement – to drive a commercial tank vehicle (over 26,000 pounds) designed to transport any liquid or gaseous material within a tank that is permanently or temporarily attached to the vehicle or chassis. Does not include portable tanks having a rated capacity under 1,000 gallons.
Double and triple trailer endorsement – to pull double and triple trailers.
Passenger endorsement – to drive any vehicle, except a school bus, designed to carry 16 or more persons, including the driver.
School bus endorsement – to drive a vehicle designed to carry 16 or more persons, including the driver that is marked with or displays the words “school bus” and is used to transport students to or from school and may be used to transport students to or from authorized school activities. A school bus manufacturer, dealer or mechanic is not required to have the endorsement while operating a school bus that is not transporting students. A driver must qualify for a passenger endorsement before obtaining a school bus endorsement.
Hazardous materials endorsement – to drive any vehicle carrying hazardous materials that require placards or transporting any amount of material listed in the Federal Department of Health and Human Services regulations as a select agent or toxin.