Impact of reconstruction strategies on system performance measures : maximizing safety and mobility while minimizing life-cycle costs : final report, December 8, 2008.
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2008-12-08
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Edition:Final report; 9/1/07-10/31/08.
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Abstract:The objective of this research is to develop a general methodological framework for planning and ; evaluating the effectiveness of highway reconstruction strategies on the system’s performance ; measures, in particular safety, mobility, and the total cost of network rehabilitation. Transportation ; networks are characterized by uncertainty that stems from different sources and transportation planners ; should consider risks involved in uncertainty in model parameters. In this research, Conditional Value at ; Risk (CVaR) is used to quantify and measure the risk in pavement performance and travel demand. First, ; a method of constructing risk‐based rehabilitation policies for a network of pavement facilities that ; ensures a specific quality level is introduced. Second, to enhance network mobility, several optimization ; models to minimize travel time for all paths connecting the same origin and destination pair is presented. ; Finally, to improve network safety during capacity expansion decisions, two models are presented to ; reduce accident rate by changing the ratio of flow to the link capacity to reduce injury and fatal accidents ; and property damage accidents.
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Main Document Checksum:urn:sha256:36f9fdbcbff266f87ed104a25c7542d1a05375ebaac7fc642dcb37362d969bd9