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在出租车交接班时间段内经常发生打车难,甚至空车拒载的现象,研究出租车交接班行为的时空分布特征不仅能提高出租车运行效率,同时能缓解出租车供需矛盾,方便公众出行。本文采用武汉市出租车GPS轨迹数据,建立了出租车交接班时空序列模式,提出了交接班时空序列模式挖掘与识别方法,分析了交接班事件的时空分布特征,并以车辆区域覆盖强度、区域覆盖密度为指标对交接班停靠点城市资源配置进行了评估。研究结果表明:武汉市出租车交接班集中发生在凌晨1:00-4:00与下午16:00-17:00,下午交接班高峰与晚交通高峰时段有部分重叠,交接班地点比较均匀地遍布中心城区(青山区除外,此区域开发程度较低),武昌区交接班强度最大,江汉区交接班密度最大。此外,结合武汉市2012年出台禁止出租车司机在晚高峰交通时段交接班的规定,探测发现6.5%左右的司机仍存在严重违规交接班行为。
Taxis often occur during the handover period, and even the phenomenon of empty car rejection, research on the characteristics of the time-space distribution of taxis can not only improve taxi operating efficiency, but also can ease the contradiction between supply and demand of taxis to facilitate public travel. In this paper, we use taxi GPS trajectory data in Wuhan to establish the taxi time-shift sequence mode, and put forward the method of time-sequence pattern mining and identification of handover. The spatial and temporal distribution characteristics of handover events are analyzed. Taking vehicle coverage intensity, Coverage density as an indicator of the allocation of the city to stop the allocation of resources were assessed. The results show that the shift of taxis in Wuhan takes place mainly in the morning of 1: 00-4: 00 and the afternoon of 16: 00-17: 00. The peak of rush hour in the afternoon and the peak of evening traffic partly overlap, All over the central city (except Qingshan District, the development of this area is lower), Wuchang District, the largest shift handover strength, Jianghan District, the largest shift. In addition, in conjunction with the introduction of a ban on taxi drivers in the rush hour handover in 2012 in Wuhan, the probe found that about 6.5% of drivers still had serious illegal handover operations.