DIN SPEC 1147

Road and airfield surface characteristics – Part 7: Procedure for determining the skid resistance of a pavement surface using a device with longitudinal fixed slip ratio (LFCG): the Grip Tester®; German version CEN/TS 15901-7:2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2010