Which agency regulates the shipping of hazardous materials?

The shipping of hazardous materials is primarily regulated by the Department of Transportation (DOT). The DOT has specific regulations that govern the safe transportation of hazardous materials, ensuring that they are properly packaged, labeled, and transported in a way that minimizes risks to public safety, health, and the environment.

While the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA) also have important roles in managing hazardous materials, their focus is more on environmental protection and workplace safety, respectively. The EPA oversees regulations related to the environmental impact of hazardous materials, and OSHA sets standards for the safe handling of hazardous substances in the workplace.

However, since all three agencies contribute to the overall framework of safety and regulation concerning hazardous materials, stating that "all of the above" encompasses the different regulatory aspects makes sense. Each agency has a distinct role, but the DOT is the primary body responsible for the regulations specific to transportation. Thus, recognizing that all these agencies work together within their respective purviews underscores the importance of a comprehensive approach to safety in handling hazardous materials.