Which agency regulates hazardous materials in commercial transport?

The regulation of hazardous materials in commercial transport is under the jurisdiction of the Department of Transportation (DOT). This agency is responsible for ensuring that the transportation of hazardous materials is conducted in a safe and secure manner, minimizing risks to public health and the environment. The DOT establishes regulations that govern the packaging, labeling, and handling of these materials during transport, which are crucial for preventing accidents and protecting both workers and the general public.

In addition to overseeing the transportation of hazardous materials, the DOT collaborates with other agencies, such as the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA), which have their own regulations concerning hazardous substances, but primarily focus on waste management and workplace safety, respectively. The Department of Labor plays a different role, focusing more on labor laws and workers' rights than on the specifics of hazardous materials transport. Thus, the Department of Transportation is the correct choice for regulating hazardous materials in this context.