Automobile accidents are a leading cause of death and injury in the United States. Often, injuries occur unnecessarily. The U.S. Department of Transportation is the government agency that regulates American roads. The mission is to serve the United States by ensuring a fast, safe, efficient, accessible, and convenient transportation system that meets our vital national interests and enhances the quality of life of the American people, today and in the future. The site contains information about laws, regulation, product recalls, and safety notices.