Which regulatory agency primarily oversees hazardous materials transportation?

The Department of Transportation (DOT) is the primary regulatory agency overseeing hazardous materials transportation. This agency establishes regulations designed to ensure the safe and secure transport of hazardous substances across various modes of transportation, including road, rail, air, and waterways. The DOT sets guidelines for packaging, labeling, and handling hazardous materials, making it essential for the safety of both the public and the environment during their transport.

The other agencies mentioned have specific roles but do not primarily focus on the transportation aspect. For instance, the Environmental Protection Agency (EPA) regulates the handling and disposal of hazardous substances but does not primarily oversee their transportation. The Federal Communications Commission (FCC) deals with communications and does not have any regulatory authority over hazardous materials transport. Lastly, the Occupational Safety and Health Administration (OSHA) focuses on workplace safety and health regulations, which may include handling hazardous materials, but it does not govern their transportation. This delineation of responsibilities reinforces the DOT's unique position in regulating hazardous materials transportation effectively.