A hopefully exact representation of the international Prohibition Sign, as defined in the ISO 3864-1:2002 standard. The dimensions are accurate, but the color may be slightly off, because of the difficulty in converting from the colors defined in the standard to those used in Adobe Illustrator.
Created in AutoCAD 2005 then modified in Adobe Illustrator CS2 based on the ISO 3864-1:2002 standard.
Peter K. Sheerin, based on the ISO 3864-1:2002 standard.