The safety of the nation's highways is a top priority for the US Department of Transportation (DOT). The agency develops federal transportation policy and promotes the improvement of roads, pipelines, railways, airways, and waterways. DOT consists of about 10 organizations, including the Federal Aviation Administration, the Federal Railroad Administration, and the Maritime Administration. DOT works with the local, state, and private sector to achieve objectives such as increasing mobility, protecting the environment, and supporting national security. Founded in 1966, the agency has an annual budget of about $80 billion.