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Development of a Second Generation Detection-Control System for Safer Operation of High-Speed Signalized Intersections.
| 题名： | Development of a Second Generation Detection-Control System for Safer Operation of High-Speed Signalized Intersections. |
| 作者： | zimmerman, k. |
| 关键词： | high speed, algorithms, detection, control systems, zone protection, program evaluation, driver behavior, design analysis, operations, literature reviews, texas, testing |
| 摘要： | This project improved and evaluated a detection-control system (D-CS) for enhanced traffic safety at high speed signalized intersections. A literature review was conducted to identify potential enhancements to D-CS control algorithm required to create the 'second generation' D-CS algorithm. The needed enhancements included dilemma zone protection based on vehicle size, real-time dilemma zone changes, coordination, and real-time measures of effectiveness reporting. After selecting the most feasible enhancements, the control algorithm was modified and tested in the laboratory. Based on laboratory test results and refinements, a 'second generation' D-CS control algorithm was developed capable of providing dilemma zone protection specific to vehicle type using a modified system to prevent max out during 'Stage 2' operation. The new algorithm showed improvement over the original algorithm and could provide real time information to engineers about intersection operation. The software was downloaded to intersections where D-CS had been installed during earlier field trials. At the first installation, it was discovered that shortening the D-CS protection zone to improve efficiency (the third installment) caused increased red light violation by vehicles. Therefore, prior to the second field trial, the third enhancement was removed from the enhanced control algorithm. The second trial was more successful as a result, indicating that the enhanced algorithm is successful at improving safety at isolated high-speed intersections. / NOTE: Final rept. (Jul 2005-Jul 2006). / Supplementary Notes: Sponsored by Transportation Research Board, Washington, DC. IDEA Programs. / |
| 报告类型： | 科技报告 |
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- In-Service Evaluation of a Detection-Control System for High-Speed Signalized Intersections. Technical rept. (Sept. 2002 - Aug. 2005).
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