Road　driving　comfort　is　mainly　affected　by　the　pavement　roughness.　At　present,　there　are　three　evaluation　methods:　subjective　feeling,　driving　vibration　and　heart　physiological　changes　of　drivers　and　passengers.　Due　to　different　test　objects,　test　methods　and　evaluation　criteria,　the　accuracies　of　different　methods　for　road　driving　comfort　evaluation　are　different,　and　the　evaluation　results　are　also　different.　In　order　to　improve　the　accuracy　and　objectivity　of　road　driving　comfort　evaluation,　a　comprehensive　evaluation　method　for　road　driving　comfort　using　D-S(Dempster-Shafer)　evidence　method　for　decision-making　fusion　of　three　evaluation　methods　was　proposed　to　test　the　outdoor　riding　test　results　of　12　asphalt　pavements　with　roughness　changing　from　1.06~5.53m/km.　The　research　results　show　that　the　comprehensive　evaluation　system　of　driving　comfort　based　on　road　roughness　established　by　D-S　evidence　method　can　significantly　reduce　the　uncertainty　of　each　evaluation　method,　verify　the　validity　of　the　model,　and　obtain　the　absolute　threshold　of　road　roughness　with　3　kinds　of　comfort　evaluation　methods;　the　speed　has　an　important　influence　on　the　proportion　of　uncertainty　in　the　comprehensive　evaluation　system,　which　is　in　line　with　the　actual　situation.　©　2019,　Editorial　Department,　Journal　of　South　China　University　of　Technology.　All　right　reserved.