考慮路徑導引下之運輸走廊最佳化控制模式

An Optimal Control Model on Traffic Corridors with Route Guidance

10.6402/TPJ.201103.0031

胡大瀛(Ta-Yin Hu)；吳東祐(Tung-Yu Wu)

運輸走廊 ； 智慧型交通管理 ； 路徑導引 ； Traffic corridor ； Intelligent traffic management ； Route allocation

運輸計劃季刊

40卷1期（2011 / 03 / 30）

31 - 62

繁體中文

尖峰時段下運輸走廊上常出現重現性的壅塞情形，且車輛容易回堵至附近市區道路，甚至影響到高速公路主線上的車輛遂行。近年來，智慧型交通管理(intelligent traffic management, ITM)已應用於高速公路管理，藉以紓解運輸走廊中產生的車輛擁擠情形。本研究根據store-and-forward概念，整合路徑導引特性，建構線性最佳化控制模式，其控制變數包括綠燈時間、匝道儀控率及各路段車輛停等長度。此一最佳化控制模型優點為可作離線型運輸走廊控制策略的評估，且可為線上型交通控制策略的擬定參考。最佳化求解採用數學規劃軟體CPLEX，除可求取運輸走廊中目標函數總延滯時間(total delay)最小化，並可分析不同交通管理策略之效率。

During the peak period, recurrent traffic congestion usually occurs in transportation corridors, and the resulting queues affect not only mainline freeways but also near-by surface streets. Intelligent Traffic Management (ITM) has been proposed to relieve possible congestion on traffic corridors through advanced and intelligent traffic control strategies. Based on the concept of the store-and-forward method, the corridor management problem is formulated as a linear optimal control model, and the objective function is to minimize the total queue length for considered traffic corridors. The advantage of an optimal linear control model can be used to evaluate the offline control strategy and online control. Objective values for different control strategies are solved by CPLEX, and the optimal control settings are obtained based on these calculations.

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