Highway improvement project selection by the joint consideration of cost-benefit and risk criteria |
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Authors: | P Kelle H Schneider C Raschke H Shirazi |
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Institution: | 1.Department of Information Systems and Decision Sciences,Louisiana State University,Baton Rouge,USA;2.Highway Safety Research Group in the Department of Information Systems and Decision Sciences,Louisiana State University,Baton Rouge,USA;3.Louisiana Department of Transportation and Development,Baton Rouge,USA |
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Abstract: | Since highway improvement project selection requires screening thousands of road segments with respect to crashes for further analysis and final project selection, we provide a two-step project selection methodology and describe an application case to demonstrate its advantages. In the first step of the proposed methodology, we will use odds against observing a given crash count, injury count, run-off road count and so on as measures of risk and a multi-criteria pre-selection technique with the objective to decrease the number of prospective improvement locations. In the second step, the final project selection is accomplished based on a composite efficiency measure of estimated cost, benefit and hazard assessment (odds) under budget constraints. To demonstrate the two-step methodology, we will analyze 4 years of accident data at 23?000 locations where the final projects are selected out of several hundred of potential locations. |
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