United States Department of Transportation
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Edition:Final Report
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Abstract:Due to the time and expense required for the preliminary data collection and site assessment, some local governments lack the resources for an in-depth analysis of highway safety needs in their jurisdiction. This is significant because these jurisdictions may not determine candidate projects for safety program funding, and high-incident locations statewide may go without remedy despite the availability of federal aid for local safety improvements. The focus of this research has been primarily on development of site identification and implementation strategies for local safety projects. This research is intended to provide local governments with an efficient and justifiable means of assigning priority to potential projects in a local safety program. While some analysis has been devoted to the multiple variables that affect the outcome of a safety measure, the primary aim of that analysis was the synthesis of data such as traffic volumes, average speed, type and design of roadway, and special circumstances, in order to develop appropriate parameters for implementation strategies. This process was automated through the development of a database model intended to facilitate site identification and safety project selection by local jurisdictions and planning organizations. By providing an automated method for identifying local safety hazards, prioritizing these locations, and evaluating the potential benefits of treatments designed to remedy these locations, the Arizona LGSP affords local jurisdictions more time for in-depth research of specific sites and a rationale for decision-making that is impartial and justifiable. It is expected that the Arizona LGSP model will help local governments address their highway safety needs on a more timely basis, and ensure that more attention is directed at the most hazardous locations, thereby improving the overall safety of the roadway system in Arizona.
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