智慧型運輸系統(ITS) 通訊協定之研究---通訊網路評選模式之建立

Abstract

目前國內正積極推動智慧型運輸系統的規劃與建設，其目標在利用先進的通訊網路及其他尖端科技改善交通狀況，達到更安全、便利的目的，同時減少交通擁塞、空氣污染及對生活環境的影響。然智慧型運輸系統的涵蓋範圍廣泛，根據不同的應用範圍，其所適用的通訊網路，如蜂巢式行動電話、行動數據、呼叫器或副載波廣播等，亦將不同。 本計畫首先將界定國內智慧型運輸系統的各項應用課題，並分析其通訊需求。同時在搜集並瞭解各先進國家及國內相關通訊網路後，針對每一應用課題分析並研擬其所適用之通訊網路，並根據研擬過程的經驗，建立一套評選通訊網路的程序及模式。最後將以都市公車動態資訊系統為例，驗證此模式的可行性。

Intelligent transportation systems (ITS) comprise a wide range of novel tools for managing transport networks as well as services for travelers. ITS tools are based on three core features: information, communications, and integration. The collection, processing, integration and supply of information are at the heart of ITS. Whether offering real-time information about current traffic conditions for a network, or on-line information for journey, ITS tools enable authorities, operators, and individual travelers to make better informed, more coordinated, and more intelligent decisions. Most of the ITS applications have some components involving the flow of data or voice messaging between vehicles, remote sites, and coordinated control centers. Thus, communications, especially wireless communications, are essential for these applications. The ultimate selection of particular communications systems will greatly affect the viability of any ITS network, so this decision must be based on a clear understanding of the costs and other performance parameters of the various technologies available. It is the purpose of this project to review and evaluate suitable communication networks for ITS applications, based on a thorough study of ITS communication needs.