Compromising system and user interests in shelter location and evacuation planning
Transportation Research Part B: Methodological
146 - 163
Item Usage Stats
Traffic management during an evacuation and the decision of where to locate the shelters are of critical importance to the performance of an evacuation plan. From the evacuation management authority's point of view, the desirable goal is to minimize the total evacuation time by computing a system optimum (SO). However, evacuees may not be willing to take long routes enforced on them by a SO solution; but they may consent to taking routes with lengths not longer than the shortest path to the nearest shelter site by more than a tolerable factor. We develop a model that optimally locates shelters and assigns evacuees to the nearest shelter sites by assigning them to shortest paths, shortest and nearest with a given degree of tolerance, so that the total evacuation time is minimized. As the travel time on a road segment is often modeled as a nonlinear function of the flow on the segment, the resulting model is a nonlinear mixed integer programming model. We develop a solution method that can handle practical size problems using second order cone programming techniques. Using our model, we investigate the importance of the number and locations of shelter sites and the trade-off between efficiency and fairness. © 2014 Elsevier Ltd.
KeywordsConstrained system optimal
Evacuation traffic management
Second order cone programming
Economic and social effects
Second-order cone programming
Emergency traffic control
Published Version (Please cite this version)http://dx.doi.org/10.1016/j.trb.2014.11.010
Showing items related by title, author, creator and subject.
Akar, Nail; Hokelek, İbrahim; Atik, Muammer; Karasan, Ezhan (IEEE, 2003-10)We propose a novel traffic engineering architecture for IP networks with multiprotocol label switching (MPLS) backbones. In this architecture, two (primary and secondary) label switched paths (LSPs) are established among ...
Şengezer, Namık; Karasan, Ezhan (Springer, 2007)We propose an online traffic engineering (TE) scheme for efficient routing of bandwidth guaranteed connections on a Multiprotocol label switching (MPLS)/wavelength division multiplexing (WDM) network with a traffic pattern ...
Oğuz, Nihat Cem; Ayanoğlu, E. (IEEE, 1995-04)The major source of errors in B-ISDN/ATM systems is expected to be buffer overflow during congested conditions, resulting in ATM cell losses which degrade the quality of service. It has been shown by many authors that the ...