Welcome to our CDL Hazmat Practice Test website! We offer 14 different free CDL hazmat practice tests. Why do we have so many CDL hazmat practice tests? Because Hazmat is the most difficult CDL endorsement. Many sites offer one free CDL hazmat practice test. We offer 14 different tests because you can never be too prepared!

Our CDL hazmat practice test will help prepare you for the endorsement test. Hazardous materials are products that pose a risk to health, safety, and property during transportation. The term often is shortened to HAZMAT, which you may see on road signs, or to HM in government regulations. Hazardous materials include explosives, various types of gas, solids, flammable and combustible liquid, and other materials. Because of the risks involved and the potential consequences these risks impose, all levels of government regulate the handling of hazardous materials.

The Hazardous Materials Regulations (HMR) is found in parts 100 – 185 of title 49 of the Code of Federal Regulations. The common reference for these regulations is 49 CFR 100 – 185. Whether or not a material is considered hazardous is based on its characteristics and the shipper’s decision on whether or not the material meets a definition of a hazardous material in the regulations. The regulations require vehicles transporting certain types or quantities of hazardous materials to display diamond-shaped, square on point, warning signs called placards.

If you’re taking the hazmat endorsement test, our free CDL hazmat practice test is for you. You must possess a commercial driver license (CDL) with a hazardous materials endorsement before you drive any size vehicle that is used to transport hazardous material as defined in 49 CFR 383.5. You must pass a written test about the regulations and requirements to get this endorsement.

CDL Hazmat Practice TestsFull-Length Hazmat Practice TestFederal CDL Manual