Where can you find a listing of designated and restricted roads for transporting hazardous materials?

The correct answer highlights the National Hazardous Materials Route Registry as the primary source for locating designated and restricted roads for transporting hazardous materials. This registry is specifically maintained to provide information regarding which roads are appropriate for carrying hazardous substances, ensuring safety and compliance with federal regulations. It serves as a critical tool for drivers and transport companies to plan routes that adhere to safety protocols and avoid areas where hazardous materials transportation may be restricted or prohibited.

While the State Department of Transportation, FMCSA website, and local government offices may provide additional resources regarding transportation regulations and road conditions, the National Hazardous Materials Route Registry is explicitly focused on hazardous material routing. This makes it the most reliable and comprehensive authority for the specific needs of hazardous material transportation, allowing drivers to avoid potential hazards and legal issues during their routes.