In the United States, the Department of Transportation (DOT) requires the training of employees involved in commercial transportation of hazardous materials (HAZMAT). This includes training in the proper placarding of HAZMAT shipments. Placards are usually the first source of information about HAZMAT involved in an accident. After completing this eLearning course, you will know how to use and recognize placards in HAZMAT transportation. DOT Hazardous Materials Training - General Awareness and DOT Hazardous Materials Training - Hazardous Materials Table are prerequisites for this online course.