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Safety Performance Functions for Intersections.
| 题名： | Safety Performance Functions for Intersections. |
| 关键词： | road safety,intersections,safety problems;data collection, accident reduction, safety improvement, modeling efforts, findings; |
| 摘要： | Road safety management activities include screening the network for sites with a potential for safety improvement (Network Screening), diagnosing safety problems at specific sites, and evaluating the safety effectiveness of implemented countermeasures. It is important that these activities be both efficient and methodologically sound, since resources would otherwise be wasted on unnecessary treatments for safe elements and elements deserving of treatment would be left untreated. The state-of-the-art methodologies for conducting these activities make use of statistical models to predict expected accident frequencies using traffic volumes and other site characteristics as the input to the models (known as Safety Performance Functions or SPFs). CDOTs research and safety engineers are in the forefront of national efforts to develop methods using SPFs to screen large networks to find sites with a potential for safety improvement. CDOT has previously developed SPFs to identify freeway and rural roadway segments that have the potential for accident reduction. This report documents the data collection, modeling efforts, and findings of a research project to develop SPFs for ten categories of intersections. / Supplementary Notes: Prepared in cooperation with Persaud and Lyon, Inc., Ontario, Canada. Sponsored by Colorado Dept. of Transportation, Denver. and Federal Highway Administration, Denver, CO. Colorado Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A05 / NTIS In-house Control Codes: dot;12091,1101 |
| 报告类型： | 科技报告 |
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