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Simulation-Based Approach to Evaluate Safety Impacts of Increased Traffic Signal Density
| 题名： | Simulation-Based Approach to Evaluate Safety Impacts of Increased Traffic Signal Density |
| 作者： | Kendall, P.; Hoel, L. A.; Miller, J. S. |
| 关键词： | Vehicular traffic control##Traffic signal controllers##Computerized simulation##Traffic safety##Evaluation##Transportation planning##Intersections##Access##Density##Mathematical models##Correlations##Urban areas##Traffic engineering##Interchanges##Transportation management##Transportation corridors##Traffic flow## |
| 摘要： | One of the most controversial access management techniques practitioners face is also one of the most common: restricting signal density. Increased signal density can improve access for minor approaches to a corridor; however, it can also increase delays and rear-end crashes for vehicles on the mainline (major) approach. An ability to evaluate the impacts of increased signal spacing is thus critical for decision makers. Because crash data are not always east to obtain, a logical question arises: Can simulation models be used to evaluate the safety impacts of increased traffic signal density. This report describes a method for using simulation models to evaluate the safety impacts of increased traffic signal density in suburban corridors. Using 10 years of data from two major arterials in Virginia, actual crash rates were compared with operational performance measures simulated by the Synchro/SimTraffic model. As expected, crash rates were compared with operational performance measures simulated by the Synchro/SimTraffic model. As expected, crash rates were positively correlated with stops per vehicle and delay per vehicle and negatively correlated with mainline speed. |
| 总页数： | 40 |
| 报告类型： | 科技报告 |
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