Road and airfield surface characteristics – Part 2: Procedure for determining the skid resistance of a pavement surface using a device with longitudinal controlled slip (LFCRNL): ROAR (Road Analyser and Recorder of Norsemeter); German version CEN/TS 15901-2:2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2010
