Evolution of public transit modes in a commuter corridor
Evolution of public transit modes in a commuter corridor
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通勤走廊公共交通模式的演变
DOI：
10.1016/j.trc.2016.12.007
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发表时间：
2017-02-01
影响因子：
8.3
通讯作者：
Li, Zhongfei
中科院分区：
文献类型：
--
作者：
Sun, Yanshuo;Guo, Qianwen;Li, Zhongfei
本文探讨了如何在规划期内优化公共交通方式的选择。这种概念分析牺牲了地理细节，以便更好地突出重要因素之间的关系。首先，提出了一组静态模型来识别哪种类型的服务，例如，就特定需求的平均行程成本而言，只使用巴士、只使用铁路或巴士和铁路是最具成本效益的。在分析了长期规划过程中的基本因素后，例如，考虑到铁路扩展的规模经济和未来成本折扣，我们制定了一个动态模型，以优化规划期内的决策。虽然可以获得一些决策变量的解析解，但最终模型是通过探索初始成本和经常性成本之间的权衡，用图形方法求解的。这项研究的主要发现包括：（a）铁路线存在最小经济长度，可以通过数字确定;（B）规模经济有利于大规模延伸和过剩的供应能力;（c）即使从长远来看，铁路服务在很大程度上仍由支线干线服务主导。(C)2016爱思唯尔有限公司版权所有。
This paper explores how the selection of public transit modes can be optimized over a planning horizon. This conceptual analysis sacrifices geographic detail in order to better highlight the relations among important factors. First, a set of static models is proposed to identify which type of service, e.g., bus only, rail only, or bus and rail, is the most cost-effective in terms of the average trip cost for given demand. After analyzing essential factors in a long-term planning process, e.g., economies of scale in rail extension and future cost discounting, a dynamic model incorporating such considerations is formulated to optimize the decision over a planning horizon. While analytical solutions can be obtained for some decision variables, the final model is solved with a graphical method by exploring the tradeoffs between the initial and recurring costs. Major findings from this study include: (a) there exists a minimum economic length for a rail line, which can be determined numerically; (b) economies of scale favor large extensions and excess supplied capacity; (c) the rail-only service is largely dominated by the feeder-trunk service, even in the long run. (C) 2016 Elsevier Ltd. All rights reserved.