Implementation of Risk Index based on Accessibility Measure for Increasing the Reliability of Kurdistan Province Roadway Network

Incidence of natural disasters is inevitable and cause many losses. Transportation network connectivity, considering the important role of highways, under emergency conditions is very important. Proper function of road networks could reduce the adverse effects of disasters. Road networks which fail to provide the necessary access have a little reliability. They will contribute to more widespread losses and damages. Kurdistan province geographic and natural conditions make it quite prone to natural disasters. To reduce losses and damages, it is imperative to provide access. Hence, the provision of access and reducing injuries is important. In this study, based on large volume of information, a risk index for Kurdistan road network is estimated. To validate this index, a sensitivity analysis is done. The results are compared with data from past events. With this index, the routes are prioritized for investment based on their risk of failure.