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首页> 外文会议>Joint Conference on Light Rail Transit >Salt Lake City Integrated Traffic-Control System for Street-Running Light Rail: Impact of Roadway-Trackway Geometry on Traffic Priority-Control Design Options
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Salt Lake City Integrated Traffic-Control System for Street-Running Light Rail: Impact of Roadway-Trackway Geometry on Traffic Priority-Control Design Options

机译：盐湖城综合交通管制系统街道落轨：道路轨道几何对交通优先控制设计选项的影响

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摘要

Guidance is provided with regard to traffic control for integration of light-rail transit (LRT) into city streets. The interrelationship between the design geometry of the roadway-trackway system and traffic-control options and safety considerations is described. Also, alternative treatments for facilitating the movement of LRT trains through on-street alignments are identified and compared. Finally, key design features of the Utah Transit Authority "TRAX" light-rail starter line are presented, along with an overview of the priority-control scheme for LRT trains. The priority control is integrated into the Areawide Traffic Management System, which is being developed separately by the Utah Department of Transportation in conjunction with the county of Salt Lake and Salt Lake City. The Traffic-Control Module (TCM) that has been placed in service uses tiered progression techniques to provide priority service for light-rail vehicles with minimal disruption to traffic-signal operation. TCM uses a combination of techniques, as follows: (a) background timing plan-a fixed timing plan that provides a green band for LRV progression; (b) virtual preemption-a method that emulates full preemption of a traffic signal to allow LRVs that arrive outside of the green band to be served with minimal delay; and (c) priority control-a method that adjusts traffic-signal timing parameters well in advance of the arrival of LRVs to obtain benefits similar to full preemption without disrupting selected critical traffic-signal operational parameters.
机译：关于将光轨过境（LRT）集成到城市街道的交通管制方面提供了指导。描述了道路轨道系统和交通控制选项和安全考虑的设计几何之间的相互关系。此外，鉴定并比较了用于促进通过路上对准的LRT列车移动的替代处理。最后，提出了犹他州过境机构“Trax”轻轨启动线的关键设计特征，并概述了LRT列车的优先控制方案。优先级控制集成到AreaWide交通管理系统中，该系统由犹他州交通部分开开发，与盐湖和盐湖城县配合。已放置在服务中的交通控制模块（TCM）使用分层的锐利技术来为灯路车辆提供优先级服务，对交通信号操作的破坏性最小。 TCM使用技术的组合，如下：（a）背景时序计划 - 为LRV进展提供绿色频段的固定时序计划; （b）虚拟抢占 - 一种模拟完全抢占交通信号的方法，以允许到达绿色频段外部的LRV以最小的延迟服务; （c）优先级控制 - 一种方法，该方法在LRV到达的到来之前调整流量信号定时参数，以获得类似于完全抢占的益处，而无需中断所选择的关键流量信号操作参数。

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