基于VisVAP的過飽和交叉口群自適應(yīng)控制評價

趙亞東,吳其龍

(上海理工大學 管理學院,上海　200093)

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基于VisVAP的過飽和交叉口群自適應(yīng)控制評價

趙亞東,吳其龍

(上海理工大學 管理學院,上海200093)

摘要為了提高交叉口群的運行效率,以改進的TACOS模型為基礎(chǔ),提出了適應(yīng)過飽和狀態(tài)下交通流動態(tài)變化的自適應(yīng)控制策略。該方法以交叉口的關(guān)鍵路徑通過最大車輛和平均排隊長度最小為目標,實時優(yōu)化相位放行方案,并根據(jù)最大排隊長度的車流方向放行綠燈進行實時控制。利用Vissim中VisVAP模塊對過飽和交叉口群自適應(yīng)控制策略進行多項指標評價分析,并與定時控制相比較。結(jié)果表明,該控制方法可有效降低車輛平均等待時間和車均延誤,提高通行能力。

關(guān)鍵詞交叉口群;自適應(yīng)控制;相位切換;VisVAP;仿真評價

Evaluation of Oversaturated Intersection Group Adaptive Control Based on VisVAP Simulation

ZHAO Yadong,WU Qilong

(Business School,University of Shanghai for Science and Technology,Shanghai 200093,China)

AbstractAn adaptive control strategy based on the improved TACOS model for the supersaturated state of traffic flow dynamic change is proposed to improve the efficiency of intersection group of adaptive control intersection.This method offers real-time optimization phase release plan with the intersection of the critical path through the vehicle maximum and average queue length minimum as the goal and release the green light for real-time control according to the flow direction of the maximum queue length.The Vissim VisVAP module is employed for multiple index evaluation analysis of intersection group of adaptive control strategy,which is compared with the timing control.Results show that the adaptive control method can effectively improve traffic capacity by reducing the average waiting time and delay of motor vehicles.

Keywordsintersection group;adaptive control;phase-switching;VisVAP;simulation and evaluation

交叉口群[1]是地位位置相鄰,具有強關(guān)聯(lián)性的各交叉口之間相互影響制約的一個系統(tǒng)。目前在過飽和狀態(tài)交叉口控制方面由于優(yōu)化目標并不成熟,延誤、飽和度等參數(shù)無法直接測量,交叉口又經(jīng)常出現(xiàn)排隊溢出等狀況,所以無法按照穩(wěn)態(tài)流的方法進行控制。針對過飽和狀況下的交叉口群控制,高云峰等提出了交叉口微觀交通狀態(tài)的概念,將交叉口進口道分為3種狀態(tài)并分別建立相對應(yīng)的交通控制評價指標的實時計算模型[2]。徐洪峰等針對環(huán)形交叉口提出了一種所有進口道實時交通信號控制策略,融合讓行規(guī)則控制和交通信號控制的技術(shù)優(yōu)勢,及時判斷并消除環(huán)道“鎖死”的可能性[3]。……