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Integrated Decision Support for Roadway Safety Analysis |
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| Authors: | Jang-Hyeon Jo Jong-Sung Lee Yanfeng Ouyang Fan Peng |
| Affiliation: | 1Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, Urbana, IL. 2Research Scientist, National Center for Supercomputing Applications, Univ. of Illinois at Urbana-Champaign, Urbana, IL. 3Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, Urbana, IL (corresponding author). E-mail: yfouyang@illinois.edu |
| Abstract: | This paper presents an integrated decision-support framework that helps public agencies identify high-crash locations and develop cost-effective safety improvement projects. State-of-the-art safety concepts, such as safety performance functions, empirical Bayesian method, and potential for safety improvements, are incorporated to identify hazardous highway locations. Cost-effective safety projects are prioritized based on life-cycle safety benefit evaluation and optimal resource allocation models. An efficient solution algorithm to the optimization model is also proposed. The models are implemented in an internet-based, geographic information system (GIS) software tool that builds on state-of-the-art information technologies, graphical interfaces, and customized GIS algorithms such as spatial analysis with buffering operations. |
| Keywords: | Highways and roads Safety Decision support systems Resource allocation Geographic information systems |