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Estimation of delay variability at signalized intersections for urban arterial performance evaluation
| 题名： | Estimation of delay variability at signalized intersections for urban arterial performance evaluation |
| 其他题名： | Abdy,Z.,&Hellinga,B.(2008).Modelling day-to-day variability of intersection performance using microsimulation.Transportation Research Record,2088,18–25. |
| 正文语种： | 英文 |
| 作者： | Peng Chen |
| 关键词： | delay variability;performance evaluation;signalized intersection;travel time variability;urban arterial |
| 摘要： | Urban arterial performance evaluation has been broadly studied, with the major focus on average travel time estimation. However, in view of the stochastic nature of interrupted flow, the ability to capture the characteristics of travel time variability has become a critical step in determining arterial level of service (LOS). This article first presents a stochastic approach that integrates classic cumulative curves and probability theories in order to investigate delay variability at signalized intersections, as a dominant part of the link travel time variability. This serves as a basis for arterial travel time estimation, which can be obtained through a convolution of individual link travel time distributions. The proposed approach is then applied in the estimation of travel time along one arterial in Shanghai, China, with abundant automatic vehicle identification (AVI) data sources. The travel time variability is evaluated thoroughly at 30-min intervals, with promising results achieved in comparison to the field measurements. In addition, the estimated travel time distributions are utilized to illustrate the probability of multiple LOS ranges, namely, reliability LOS. The results provide insights into how wemight achieve a more reliable and informative understanding of arterial performance. |
| 出版年： | 2017 |
| 论文唯一标识： | J-96Y2017V21N02002 |
| 英文栏目名称： | Articles |
| 期刊名称： | Journal of Intelligent Transportation Systems Technology Planning and Operations |
| 拼音刊名(出版物代码)： | J-96 |
| 卷： | 21 |
| 期： | 02 |
| 页码： | 94-110 |
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