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引用次数: 0
摘要
城市公共交通投资涉及城市空间中公交线路组织的战略决策、技术选择、每条线路的车队和车辆规模及其间距（线路密度）。Fielbaum 等人的参数城市模型（PCM）（Transp Res Part B Methodol 94:298-338; Netw Spat Econ 17:343-365）是为了在实际问题中构思和决定结构设计（战略设计的第一步）而创建的，该模型通过区域和中心代表城市，并在考虑单一技术的情况下评估预定的线路结构。本文扩大了 PCM 的范围和功能，以帮助城市交通系统的结构设计，方法是对所研究的线路结构类型进行开放式搜索，并考虑两种技术（模式），同时指出简化表示法是交通政策的有用工具，不同于通常的 "黑箱 "程序。该方法适用于智利圣地亚哥的 PCM 版本，表明不同于支线-干线的方案可能很方便。研究结果支持圣地亚哥目前采取的方案，即在扩建地铁的基础上改变公交系统的作用。
Expanding the parametric city model for the structural design of two-technology transit systems, with an application to Santiago
Investment in urban public transportation involves strategic decisions regarding the organization of transit lines in the urban space and the choice of their technology in addition to the size of both fleet and vehicles of each line, and their spacing (lines density). The parametric city model (PCM) of Fielbaum et al. (Transp Res Part B Methodol 94:298–338; Netw Spat Econ 17:343–365) was created to conceive and decide a structural design - the first step of the strategic design - in real size problems, representing the city through zones and centers and evaluating predetermined lines-structures considering a single technology. In this paper the scope and capabilities of the PCM are expanded to help the structural design of urban transit systems, by opening the search for the type of lines-structures studied and considering two technologies (modes), noting that the simplified representation constitutes a useful tool for transport policy that departs from the usual “black-box” procedures. The approach is applied to a PCM version of Santiago, Chile, showing that schemes different from feeder-trunk might be convenient. The results support the options presently taken in Santiago based upon subway expansions but changing the role of the bus system.
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In our first issue, published in 1972, we explained that this Journal is intended to promote the free and vigorous exchange of ideas and experience among the worldwide community actively concerned with transportation policy, planning and practice. That continues to be our mission, with a clear focus on topics concerned with research and practice in transportation policy and planning, around the world.
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