Using the freight axle mass limits investigation tool (FAMLIT) to estimate the marginal cost of road wear

Improved freight vehicle productivity can be obtained by increasing the allowable axle loads above current load limits. In turn improved productivity can potentially reduce greenhouse gas (GHG) emissions by reducing the number of freight vehicles for a given freight task. Increased axle load pavement impacts can be managed using the marginal cost of road wear as the basis of a price for increasing axle loads. These prices can provide a basis for targeting maintenance and rehabilitation funding provided the revenue raised by the price is linked to funding. FAMLIT is a pavement life-cycle costing model that has been used to estimate load-wear-cost (LWC) relationships for a range of typical roads and pavement types subject to incremental loading over current load limits by six axle groups. These load wear costs were estimated as the present value (PV) of maintenance and rehabilitation costs incurred by managing road pavement within agreed surface and structural conditions. These costs have been converted to equivalent annual uniform costs (EAUC) and developed into LWC relationship against axle load (tonne-km) and standard axle repetitions (SAR-km). The marginal cost of road wear was determined by the first derivative of the LWC relationships. The estimated marginal road wear costs were found to vary across the various road types and were highly dependent on the pavement/subgrade strength.

• Record URL:
  http://arrbknowledge.com
• Authors:
  • Hore-Lacy, W
  • Thoresen, T
  • Martin, T
• Conference:
  • ARRB Conference, 25th, 2012, Perth, Western Australia, Australia
• Publication Date: 2012-9

Language

• English

Media Info

• Pagination: 15p
• Monograph Title: The Australian Low Carbon Transport Forum: identifying the greenhouse gas abatement potential of the Australian transport sector

Subject/Index Terms

• TRT Terms: Axle loads; Costs; Heavy vehicles; Life cycle costing; Maintenance; Pavement management systems; Pavements; Rolling contact; Tests for suitability, service and quality
• Uncontrolled Terms: LIFE-CYCLE; Road design and asset management
• ATRI Terms: Axle load; Life cycle costs; Pavement evaluation; Pavement management; Vehicle pavement interaction
• ITRD Terms: 5440: Contact (tyre road)
• Subject Areas: Finance; Highways; Maintenance and Preservation; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 01455602
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Nov 30 2012 2:41PM