原文传递
A Probe-Based Variable Speed Limit System
| 题名： | A Probe-Based Variable Speed Limit System |
| 其他题名： | Abdel-Aty,M.,&Dhindsa,A.(2007).Coordinated use of variable speed limits and ramp metering for improving safety on congested freeways.86th TRB Annual Meeting,Washington,DC,January 21–25. |
| 正文语种： | 英文 |
| 作者： | LINA KATTAN |
| 关键词： | Freeway Control;Microsimulation;Safety;Space Mean Speed;Variable Speed Limit;Vehicle Probes |
| 摘要： | This article presents the results of an evaluation of a candidate variable speed limit (VSL) system that takes the space mean speeds (SMSs) from probe vehicles as its main input. The presented algorithm extends the capability of a model predictive control (MPC) VSL model with the input of SMS derived from vehicle probes and their corresponding space-based densities, instead of spot-based densities and detector speeds. The developed probe-based VSL was evaluated on an 8-km stretch of Highway 2, in Calgary, Alberta, Canada, using Paramics microsimulation software. The performance of the probe-based VSL algorithm was examined under various traffic conditions and probe vehicle parameters. The findings of the probe-based VSL analysis support previous findings taking input from point detectors and showing that the efficiency of the VSL strategies was efficient only for a limited range of traffic conditions. The results of the analysis show the effectiveness of developing advanced freeway control algorithms that use the main input parameters from vehicle probes. The performance of the probe-based VSL system was also comparable to, and in some cases outperformed, the point-based detector algorithm. However, the algorithm was shown to be effective only for a high frequency of information updates and under a relatively high percentage of vehicles probe penetration percentage. |
| 出版年： | 2015 |
| 论文唯一标识： | J-96Y2015V19N04002 |
| doi： | 10.1080/15472450.2014.936294 |
| 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： | 19 |
| 期： | 04 |
| 页码： | 338-354 |
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