基于MFD的路網(wǎng)周邊交通控制策略與仿真
發(fā)布時間：2018-11-14 19:30
【摘要】：宏觀基本圖(Macroscopic Fundamental Diagrams,MFD)是路網(wǎng)的固有屬性,可從宏觀層面監(jiān)視和預測路網(wǎng)交通運行狀態(tài)。鑒于此,該文提出基于MFD的路網(wǎng)周邊交通控制策略,其思路是依據(jù)MFD理論確定路網(wǎng)的MFD,當路網(wǎng)交通趨于擁擠時,通過調整周邊交叉口的信號配時方案(如周期、綠信比),對周邊車流涌入量進行限制,使路網(wǎng)區(qū)域交通保持良好的運行狀態(tài)。為驗證該策略的有效性,以廣州天河商業(yè)區(qū)為試驗區(qū)域,運用Vissim交通仿真軟件進行仿真建模,依據(jù)MFD相關理論和仿真數(shù)據(jù),確定該區(qū)域的MFD,當該區(qū)域交通趨于擁堵時,根據(jù)該策略確定周邊交通涌入量和入口綠燈時長,并仿真對比該區(qū)域實施該策略前后的各項交通信號控制性能指標。結果表明:當路網(wǎng)交通趨于擁擠時,實施周邊交通控制策略后路網(wǎng)平均延誤時間、平均停車次數(shù)、平均排隊長度等交通信號控制指標得到明顯改善。
[Abstract]:(Macroscopic Fundamental Diagrams,MFD) is the inherent attribute of the road network, which can monitor and predict the traffic state of the road network from the macroscopic level. In view of this, this paper proposes a traffic control strategy based on MFD. The idea is to determine the MFD, of the road network based on the MFD theory. When the traffic is becoming congested, the signal timing scheme (such as period, green / letter ratio) is adjusted. The traffic flow in the surrounding area is restricted and the traffic in the network area is kept in good condition. In order to verify the effectiveness of the strategy, the Vissim traffic simulation software is used to model the simulation model in Guangzhou Tianhe commercial district. According to the relevant theory and simulation data of MFD, the MFD, of this area is determined when the traffic in this area tends to be congested. According to the strategy, the traffic inflow and the green time at the entrance are determined, and the traffic signal control performance indexes before and after the implementation of the strategy are simulated and compared. The results show that the traffic signal control indexes such as the average delay time, the average number of stops, the average queue length and so on after the implementation of the traffic control strategy are improved obviously when the road network traffic tends to be congested.
【作者單位】： 廣東交通職業(yè)技術學院;
【基金】：廣東省交通運輸廳科技項目(編號:科技-2013-02-065)
【分類號】：U491.54
，
本文編號：2332084
[Abstract]:(Macroscopic Fundamental Diagrams,MFD) is the inherent attribute of the road network, which can monitor and predict the traffic state of the road network from the macroscopic level. In view of this, this paper proposes a traffic control strategy based on MFD. The idea is to determine the MFD, of the road network based on the MFD theory. When the traffic is becoming congested, the signal timing scheme (such as period, green / letter ratio) is adjusted. The traffic flow in the surrounding area is restricted and the traffic in the network area is kept in good condition. In order to verify the effectiveness of the strategy, the Vissim traffic simulation software is used to model the simulation model in Guangzhou Tianhe commercial district. According to the relevant theory and simulation data of MFD, the MFD, of this area is determined when the traffic in this area tends to be congested. According to the strategy, the traffic inflow and the green time at the entrance are determined, and the traffic signal control performance indexes before and after the implementation of the strategy are simulated and compared. The results show that the traffic signal control indexes such as the average delay time, the average number of stops, the average queue length and so on after the implementation of the traffic control strategy are improved obviously when the road network traffic tends to be congested.
【作者單位】： 廣東交通職業(yè)技術學院;
【基金】：廣東省交通運輸廳科技項目(編號:科技-2013-02-065)
【分類號】：U491.54
，
本文編號：2332084
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