METHOD AND DEVICE FOR ASCERTAINING A FRICTIONAL VALUE OF A ROADWAY Application WO-2019029891-A1 World Intellectual Property Organisation (WIPO) 14 Feb 2019
METHOD AND DEVICE FOR ASCERTAINING A FRICTIONAL VALUE OF A ROADWAY Application WO-2019029889-A1 World Intellectual Property Organisation (WIPO) 14 Feb 2019