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Title: Measuring Network Reliability Considering Paradoxes: Multiple Network Demon Approach
Accession Number: 01128652
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Traditionally, game theoretic approaches to measuring transport network reliability have relied on the outcome of a game played between network users seeking to minimize their travel costs and an origin–destination–specific (O-D–specific) demon that seeks the opposite by damaging links in the network. This problem assumes the presence of only one demon in each O-D pair and assumes the capacity reduction to be 50% if the link is selected for damage by one or more O-D–specific demons. The game is typically expressed as a path-based formulation, which is computationally intensive since the formulation requires path enumeration. With relaxation of the assumptions on the O-D–specific nature of the demons and the capacity reduction, a link-based multiple network demon formulation is proposed by the nonlinear complementarity problem approach, in which each demon is free to select any link to damage. Within this framework, the effects of the proposed model on total expected network cost and reliability measures are examined, and specific examples demonstrate the paradoxical phenomenon that if one adds a road to a network, then all travelers may be worse off for total expected network cost or travel time reliability. Overall, the results indicate the importance of assumptions used to total expected network cost and reliability measures and provide some insights into the problem of ignoring these paradoxical phenomena in reliable and robust network design.
Monograph Title: Monograph Accession #: 01135938
Report/Paper Numbers: 09-1258
Language: English
Authors: Szeto, Wai YuenO'Brien, LiamO'Mahony, MargaretPagination: pp 42-50
Publication Date: 2009
ISBN: 9780309126090
Media Type: Print
Features: Figures
(1)
; References
(21)
; Tables
(2)
TRT Terms: Identifier Terms: Uncontrolled Terms: Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning
Files: TRIS, TRB
Created Date: Jan 30 2009 5:28PM
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