THE EFFECT OF PAVEMENT ROUGHNESS ON VEHICLE FUEL CONSUMPTION

In the past decade, several published research reports have shown that vehicle fuel consumption increases as pavement roughness increases. In the current study, three different automobiles travelled on five pavements which, collectively, represented a wide range of roughness. For these pavements, roughness was expressed in the standard terms of Serviceability Index (SI), as measured with specially-designed fuelmeter mounted in each test vehicle. To minimize the effect of other variables on fuel consumption, test sites were selected that met rigid grade and curvature requirements, and test conditions and procedures were highly controlled. The collected data suggests that there is in fact a quantifiable increase in automobile fuel consumption as pavement roughness increases. However, the indicated increase is much smaller than has been reported in earlier literature. Over the range of roughness normally encountered on Wisconsin's state trunk pavements, fuel consumption appears to be a linear function of Serviceability Index.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 26 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00342140
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Jan 29 1982 12:00AM