Hazardous materials are products that pose a risk to health, safety, and property during transportation. The DOT has divided hazardous materials into nine different categories - commonly referred to as hazard classes - based on the level of potential hazard they pose. Title 49 of the United States Code of Federal Regulations (49 CFR) requires hazmat shippers to assign each hazardous material that is shipped to one of the DOT hazard class(es). Improper classification and identification of hazardous materials leaves the shipper open to a wide range of potential consequences ranging from civil and criminal penalties to safety incidents and revocation of hazmat shipping rights.
For more information, please use the link below.
www.fmcsa.dot.gov/regulations/enforcement/nine-classes-hazardous-materials-yellow-visor-card