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Field Evaluations of an Adaptive Traffic Signal-Using Private-Sector Probe Data
| 题名： | Field Evaluations of an Adaptive Traffic Signal-Using Private-Sector Probe Data |
| 正文语种： | 英文 |
| 作者： | umer-Fairbank Highway Research Center,Federal Highway Administration;Virginia Center for Transportation Innovation;Univ, of Virginia;Leidos, Inc |
| 作者单位： | Jia Hu;Michael D.Fontaine;Byungkyu Brian Park;Jiaqi Ma |
| 关键词： | Adaptive signal control;InSync;Probe data;INRIX;Delay;Travel time reliability. |
| 摘要： | This study evaluated the in-service performance of the InSync adaptive signal control (ASC) system utilizing field data collected from the private sector travel time vendor INRIX. A total of six corridors in Virginia were tested, with extensive data collected over 6 months. The measurements of effectiveness (MOEs) adopted are mainline delay savings and travel time reliability measurements (95th percentile travel time and buffer index). All the before-and-after MOEs were compared using t-tests, and the Pearson correlation of the MOEs with respect to various quantitative site-specific factors was assessed to determine if effectiveness could be tied to specific site characteristics. The results indicate that the adaptive signal control system generally reduces delay by about 25% and improves travel time reliability by about 16%. The performance of ASC system is affected by site-specific factors, like annual average daily traffic, signal density, and access point density. |
| 出版年： | 2016 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | Vol.142 |
| 期： | No.1 |
| 页码： | 04015033 |
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