Papers by Kaveh Dehaghani
Frequent disruptive incidents occur over and over in transportation networks which influence the ... more Frequent disruptive incidents occur over and over in transportation networks which influence the networks' efficiency. It is obvious that the effects of disruptions to different links can lead to different consequences in the networks. This paper tries to analyze these effects by introducing a methodology to identify the critical links of an urban highway network. This new approach is based on determining the significance of network's links called Importance Index in the present paper; the higher importance index each link has, the more effects has on the network and the highest value of value of importance index is related to critical link; "accessibility" is what helps us to calculate importance index. After occurring disruption, by using single-link failure mechanism traffic is assigned by Aimsum software based on "Capacity-Restrained Traffic Assignment" Method, and travel-cost is calculated by using three factors including travel time, DDHV and link length, then shortest-path-trees for all nodes are plotted by employing Moor algorithm and C++ codding. This paper takes Tehran district 4 transportation network as the case study. The results show that the north side of Hengam Ave is the most important part of the network study.
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Papers by Kaveh Dehaghani