原文传递
Developing an Area-Wide System for Coordinated Ramp Meter Control. Final rept.
| 题名： | Developing an Area-Wide System for Coordinated Ramp Meter Control. Final rept. |
| 作者： | Wang-Y.; Perrine-K.A.; Lao-Y. |
| 关键词： | *Ramp-meters; *Freeways-; *Traffic-management; *Traffic-congestion.;Travel-demand; Traffic-control; Travel-delay; Algorithms-; Countermeasures-; Urban-areas; Simulation-. |
| 摘要： | Ramp metering has been broadly accepted and deployed as an effective countermeasure against both recurrent and non-recurrent congestion on freeways. However, many current ramp metering algorithms tend to improve only freeway travels using local detectors inputs and overlook the negative impacts on local streets. This may generate two problems: (1) the optimal local settings may not result in a system-wide optimum in terms of traffic operations; and (2) the increased congestion on local streets due to on-ramp overflow may counteract the gains in freeway operations. To address these problems, we propose an area-wide ramp metering system to improve the coordination of ramp meters for system-wide optimization and on-ramp overflow minimization. Our experimental results show that our method can offer improved performance in ramp metering operations under tested scenarios and also reduce the likelihood of on-ramp overflow. This novel strategy for active ramp metering is inspired by the principles of a computer network congestion control strategy. In this strategy, certain types of congestion at a targeted freeway location can be significantly reduced by limiting on-ramp vehicle flows to a fraction of ramp demand and then additively increasing rates to avoid ramp queue spillover onto city streets. |
| 报告类型： | 科技报告 |
相关文献
- RHODES-ITMS CORRIDOR CONTROL PROJECT
- Evaluation of Variable Message Signs in Wisconsin: Driver Survey.
- DALLAS AREA-WIDE INTELLIGENT TRANSPORTATION SYSTEM PLAN.
- Guidelines for Evaluation of Ramp Signaling Deployments in a Real-Time Operations Environment.
- OPTIMAL COORDINATED RAMP METERING WITH ADVANCED MOTORWAY OPTIMAL CONTROL.
- Evaluation of Ramp Meter Effectiveness for Wisconsin Freeways, A Milwaukee Case Study: Part 1, Diversion and Simulation. Part 2, Ramp Metering Effect on Traffic Operations and Crashes.
检索历史
应用推荐
