Optimum road travel withstands a variety of factors constrained. It is with the railways, civil aviation, water transport together constitute a major symbol of modernization in this field. Therefore, deeply exploring and solving the various problems are of great significance. According to the key problems of optimum exchange bus for long-distance road travel, the advantages of top-down, incremental refinement and hierarchical frame system, discusses experimental system framework established on three main planning modules that includes arrived regions, passed routes and road sections, bus and exchange bus. At the same time, describes briefly bus temporal logic at different locations, model extraction of road across and the connection of road across under the bus constraint on the way.%公路旅行最佳化承受多种因素制约,它同铁路、民航、水运一起构成本领域现代化的主要标志,因此深入研究并切实解决各类难题意义重大.在揭示妨碍公路长途旅行中转接续最佳化关键难题基础上,结合自顶向下逐步求精分层递阶体系结构的优势论证,给出了建立于区域穿越、路线、路段与班次、中转接续三大主体规划模块之上的实验系统框架结构.阐述了此间面临的公交班次地理变迁时序逻辑,以及班次途径约束下的道路汇合点、汇合点连接关系模型抽取.
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