Konferens: HVTT12: International Symposium on Heavy Vehicle Transport Technology, 2012, Stockholm

This paper presents a summary of findings on the effect of pavement conditions on fuel consumption (FC), repair and maintenance (R&M) and tire wear (TW) costs. An increase in IRI of 1 m/km increases FC of passenger cars (PC) by 2% irrespective of speed. For heavy trucks (HT), this increase is 1% at highway speed (96 km/h) and 2% at low speed (56 km/h). Surface texture (MPD) and pavement type have no effect on FC for all vehicle classes except for HT. An increase in MPD of 1 mm increases FC by 1.5% at 88 km/h and 2% at 56 km/h. HT driven on AC pavements consume 4% more fuel than on PCC pavements at 56 km/h in summer conditions. The effect of pavement type was statistically not significant at higher speeds. No data was available for HT in winter. For R&M, there is no effect of roughness up to IRI of 3 m/km. Beyond this range, an increase in IRI up to 4 m/km increases R&M cost by 10% for PC and HT. At IRI of 5 m/km, this increase is up to 40% for PC and 50% for HT. An increase in IRI of 1 m/km increases TW of PC and HT by 1% at 88 km/h.