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大数据打造深圳最长绿波带
2017-08-25 08:32:07 中国青年网
本报讯(记者刘友婷)7月初,深圳交警联合市交通研究中心,利用交通大数据资源,在光明重要主干道光侨路打造了一条全市最长双向绿波带,该绿波带全长7.6公里、共包含12个信控路口,经过半个多月的试运行,效果显著。
绿波带,即某条交通线路连续交叉口交通信号间的协调控制,目的是使行驶于其中的车辆可以少遇红灯甚至不遇红灯从而快速通过。一般来说,路口数越多,路段越长,绿波带越难设计,建设难度也越高。据了解,光侨路绿波带的建设从可行性分析、绿波带设计到绿波带运行效果评估全程基于交通大数据,实现了大数据资源的深入应用。交警利用浮动车、交警卡口等交通数据分析路口交通压力及区间交通OD,实现绿波带可行性的智能识别。其次,还利用卡口电警数据拟合路口各方向的流量,以浮动车大数据拟合路段平均车速等协调基本参数,并通过大数据支撑下的软件进行在线仿真,对协调参数进行迭代持续递进优化,实现平峰、高峰不同时段绿波带参数自动计算。此外,以指数系统、浮动车轨迹数据对路段车速、路口延误、停车次数进行分析、识别协调运行问题,评估协调运行效果。
深圳市道路交通运行指数系统的数据显示,目前,光侨路路段全天拥堵延迟指数下降明显,下午平峰时段以50Km/h的设计协调车速实地验证,光侨路基本能实现双向不停车通过,其中玉塘至华夏二方向行程时间由17分12秒降至9分48秒,降幅43.0%;华夏二至玉塘方向行程时间由18分41秒降至10分8秒,降幅45.7%。
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