ABSTRACT
A case study was performed to analyze an Overweight (OW) vehicle in Las Vegas, United Sates, using the actual permit. The objective of this case study was to estimate pavement damage and its associated costs considering environmental conditions and OW vehicle axle load and configuration. A methodology was developed to estimate Load Equivalency Factor (LEF), Relative Damage Factor (RDF), and Pavement Damage Associated Costs (PDAC). The analysis was conducted for January and July, as in Las Vegas the pavement experiences the coldest and warmest temperatures, respectively, during these months. Analysis results revealed that while rutting-based LEF only slightly increased with temperature, rutting-based PDAC can be high at high temperatures. Fatigue-based LEF was higher at very low or very high temperatures, while fatigue-based PDAC values increased with increase in pavement temperature. At a certain temperature, fatigue-based LEF and fatigue-based PDAC were higher than corresponding rutting-based LEF and rutting-based PDAC, respectively.
