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題名 | 即時性模擬式交通指派模式之研究:滾動平面法之應用=Study of Real-Time Traffic Assignment: A Rolling Horizon Approach |
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作者姓名(中文) | 胡大瀛; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 19:2 2007.06[民96.06] |
頁次 | 頁263-274 |
分類號 | 557.1 |
關鍵詞 | 動態交通指派; 模擬指派模式; 路徑最佳化; Dynamic traffic assignment; Simulation-assignment model; System optimal route; |
語文 | 中文(Chinese) |
中文摘要 | 在先進交通管理系統(Advanced Traffic Management Systems, ATMS)與先進駕駛者資訊系統(Advanced Traveller Information Systems, ATIS)的發展中,動態交通指派根據依時性(time-dependent)的起迄資料進行路網內路徑最佳化的指派。目前已被應用在動態交通指派問題的方法,包括最佳控制化理論、變分不等式、數學規劃法,與模擬式的指派程序等四種。上列模式,僅解決離線(off-line)之最佳路徑提供的問題,為能進一步考慮即時性的交通管理與控制,即時性交通指派模式的發展亦逐漸重要。 本研究將以模擬式動態交通指派模式為基礎,配合滾動平面法之應用,建立一套即時性動態指派模式之演算法,希望於未來配合路徑中交通資訊系統的發展,提供即時規範性資訊設計的參考。在模擬式的動態交通指派演算法中,DYNASMART模式,將取代路段績效的使用,並反應路段流入與流出率的計算控制。 本研究以一測試路網作為測試之用,以數值實驗來探討此一演算法的合理性,並討論此一演算法未來在資訊化路網中的可能應用。 |
英文摘要 | The need for a methodology to provide time-dependent estimates of traffic flows and associated performance measures in networks arises in several problem areas, including Advanced Traffic Management systems (ATMS) and Advanced Traveler Information systems (ATIS). Four different approaches, including mathematical formulations, optimal control theory variational inequalities, and simulation-based approach, have been applied in developing Dynamic Traffic Assignment (DTA). However, these approaches focus on off-line dynamic traffic assignment problem. In order to achieve real-time control and operations, these models need to be extended to address real-time DTA issues. In this research, a real-time traffic assignment framework based on micro-simulation dynamic traffic assignment, utilized a Rolling Horizon approach, is proposed. The model addresses the problem where an ATSATMS controller is assumed to have OD desires up to the current time interval, and short-term and medium-term forecasts of future OD desires. The core of the procedure is DYNASMART, a simulation-assignment model, and the model is used to replace link-performance and exit functions. Numerical experiments on a test network and a real network are conducted to investigate time-dependent flow patterns and real-time dynamics under a wide variety of assumptions on assignment rules. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。