The Star of Life is a blue, six-pointed star, outlined with a white border which features the rod of Asclepius in the center, originally designed and governed by the U.S. National Highway Traffic Safety Administration (NHTSA) under the jurisdiction of the United States Department of Transportation, DOT). Traditionally in the United States the logo was used as a stamp of authentication or certification for ambulances, paramedics or other EMSpersonnel. Internationally, it is a symbol that represents emergency medical services units and personnel.