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Combined Ramp-Metering and Variable Speed Limit System for Capacity Drop Control at Merge Bottlenecks
| 题名： | Combined Ramp-Metering and Variable Speed Limit System for Capacity Drop Control at Merge Bottlenecks |
| 正文语种： | 英文 |
| 作者： | Hyun W. Cho;Jorge A. Laval |
| 作者单位： | Dept, of Safety, Operation, and Traffic Engineering, Virginia Transportation Research Council;School of Civil and Environmental Engineering, Georgia Institute of Technology |
| 摘要： | This paper proposes a ramp metering and variable speed limit (RM-VSL) control strategy to prevent and recover from capacity drop at freeway merge bottlenecks. Using bounded acceleration kinematic wave theory, we propose a strategy designed to prevent disruptive lane-changing maneuvers at the merge that cause capacity drop. This strategy gives more flexibility to control the ramp queue length by transferring some congestion to the freeway while maximizing total system discharge rate. Simulation experiments showed that the proposed RM-VSL system outperforms both individual components in isolation for preventing or curtailing traffic breakdown. The proposed strategy can be implemented with current technology. |
| 出版日期： | 2020.01 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | Vol.146 |
| 期： | No.06 |
| 页码： | 04020033 |
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