Which agency is responsible for the regulations interpreting the Transportation Safety Act?

The agency responsible for the regulations interpreting the Transportation Safety Act is actually the Environmental Protection Agency (EPA). The Transportation Safety Act includes provisions relevant to hazardous materials transportation, which falls under the jurisdiction of the EPA, particularly concerning environmental risks and responsibilities.

The other agencies mentioned have distinct roles; for instance, the Department of Homeland Security focuses on national security and protecting the country from various threats, including terrorism. The Fish and Wildlife Services works to conserve and protect wildlife and their habitats. The Food and Drug Administration primarily oversees the safety of food, drugs, and other consumer products, which does not align with the Transportation Safety Act's focus on hazardous materials and environmental impact.

Understanding the specific roles of these agencies is crucial for compliance with regulations surrounding transportation safety and environmental standards in the application and use of pesticides.