This file is in the public domain because it comes from the Manual on Uniform Traffic Control Devices, sign number M1-1, which states specifically on page I-1 that: Any traffic control device design or application provision contained in this Manual shall be considered to be in the public domain. Traffic control devices contained in this Manual shall not be protected by a patent, trademark, or copyright, except for the Interstate Shield and any other items owned by FHWA.

Dette værk indeholder materialer, der er underlagt LBK nr 89 af 28/01/2009: Designloven i Danmark og/eller varemærkebeskyttelseslovgivningen i en eller flere nationer. Før brugen af dette værk bør du sikre dig, at du har retten til at bruge det i de omstændigheder, du har tiltænkt. Du er alene ansvarlig for, at du ikke overtræder lovgivning vedrørende designret og/eller varemærkebeskyttelse. Se generelle betingelser for anvendelse af materialer fra Wikimedia Commons. Denne tag indeholder og/eller påviser ingen ophavsretslige informationer eller kildeinformationer af dette medie. Rettigheder skal stadigvæk oplyses. Se Commons:Licensing for flere informationer.

600 mm by 600 mm (24 in by 24 in) Interstate shield, made to the specifications of the 2004 edition of Standard Highway Signs (sign M1-1). Uses the Roadgeek 2005 fonts archive copy at the Wayback Machine. (United States law does not permit the copyrighting of typeface designs, and the fonts are meant to be copies of a U.S. Government-produced work anyway.) Colors are from [1] (Pantone Red 187 and Blue 294), converted to RGB by [2]. The outside border has a width of 1 (1 mm) and a color of black so it shows up; in reality, signs have no outside border.