Impact of Pavement Defects on Traffic Operational Performance

The present research investigates the influence of pavement distresses on traffic operational performance in terms speed and capacity. are expressed by condition index (PCI). Three roads multi-lane highways located road network Kafrelsheikh governorate, Egypt, were chosen as a case study. Road geometry, characteristics, volume collected manually from 23 sections for field data surveys. For measurements, spot gathered using stopwatch method under free-flow conditions, percentile speeds (V50% V85%) have been calculated different vehicles classes. Traffic capacity was determined via extrapolation quadratic function. Regression analysis models created to express relationships both dependent variables, three independent variables (PCI, lane, shoulder widths). These empirical mathematical relations help developing design maintenance works highways. main conclusion study demonstrated that more significantly affected than geometry. Moreover, results indicated significant impact light heavy ones.