Safer Roads Through Better Design: Using the Interactive Highway Safety Design Model
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2016-11-01
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Abstract:Improving roadway safety continues to be at the forefront of all stages of project development, including planning, alternatives analysis, design, construction, and operations. Advanced analysis methods and tools have been developed to help practitioners improve safety. One tool available now to estimate a project’s substantive safety is the Interactive Highway Safety Design Model (IHSDM). IHSDM supports performance based practical design (PBPD) via implementation of Highway Safety Manual (HSM) Part C predictive methods and can be an integral part of the Road Safety Audit process. The IHSDM contains six modules: Crash Prediction, Design Consistency, Intersection Review, Policy Review, Traffic Analysis, and Driver/Vehicle. This FREE software package helps users identify areas of safety concern within a given facility, and IHSDM outputs assist agencies in determining how to best invest limited resources to improve safety performance. Results from the model help project developers identify and justify safety related design decisions.
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