Time Contours: Using IC Toll Information to Describe Public Transport Networks Accessibility
Time Contours: Using IC Toll Information to Describe Public Transport Networks Accessibility
复制标题
时间等值线：使用 IC 收费信息来描述公共交通网络的可达性
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Rui Liu
中科院分区：
文献类型：
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作者：
Lianxiong Gao;Jianping Wu;Rui Liu
可达性是区位优势的一个基本指标。提出了一种利用公交线路流量和换乘流量信息来衡量公交线网时间可达性的算法。它首先从IC卡收费系统中获取流量和传输信息，并估计转移概率矩阵。然后用Voronoi图划分公交站点的服务区。计算了步行往返公共汽车站的时间成本。最后，计算出每个地点的平均出行时间成本。利用该方法对昆明市的一个实际公交线网进行了计算。公交线网覆盖的区域首先被10M*10M网格划分。然后计算每个网格的旅行时间代价，形成时间等值线。
Accessibility is a fundamental indicator of location advantages. This paper presents one algorithm that measures time accessibility of public transit network using the bus line flow and transfer flow information. It first obtains flow and transfer information from the IC Card Toll System and estimates the transition probability matrix. Then the service area of bus stops is bisected by a Voronoi diagram. The time cost walking to and from bus stops is calculated. Finally, the average travel time cost of each location is calculated. One real-world public transit network in Kunming is calculated using this methodology. The area covered by the public transit network is first partitioned by 10m* 10m grids. And then the travel time cost of every grid is calculated, which forms time contours.