Journal of Geo-information Science >
Study on Identification and Space-time Distribution Analysis of Taxi Shift Behavior
Received date: 2016-06-16
Request revised date: 2016-08-05
Online published: 2017-02-17
Copyright
In the period of taxis taking shift, many city dwellers find it hard to get a taxi or even get turned away in front of vacant ones. Analyzing the spatial and temporal distribution of taxi shift change behavior can improve taxis efficiency, relieve the contradictions of supply and demand of taxi, and facilitate public travelling. This study establishes space-time sequence of taxi shift behavior and puts forward a method to mine and identify taxi shift sequence from GPS trajectory. Furthermore, we adopt taxis′ GPS trajectory data in Wuhan to perform our method. Based on the identified shift events, we analyze the space-time distribution of taxis′ shift behavior and evaluate parking resource allocation for taxis′ shift change by using intensity and density as indicators. The results show that: taxis′ shift behavior in Wuhan peaks in period of 1:00 to 4:00 and 16:00 to 17:00 and the latter peak in the afternoon partially overlaps with evening rush hours, which can introduce the difficulty in taking a taxi; the parking location for taxis taking shift is relatively uniformly distributed throughout the downtown of the city except Qingshan District, which is less prosperous than the others; Wuchang District has the strongest shift intensity and Jianghan District, whose area is the smallest among all the administrative districts, has the greatest shift density. In addition, considering the regulation issued by Wuhan traffic administration in 2012, which prohibits taxi drivers from taking shift in the evening rush hours, it is revealed that about 6.5% of the drivers have serious illegal shift behavior.
TANG Luliang , DUAN Qian , KAN Zihan , LI Qingquan . Study on Identification and Space-time Distribution Analysis of Taxi Shift Behavior[J]. Journal of Geo-information Science, 2017 , 19(2) : 167 -175 . DOI: 10.3724/SP.J.1047.2017.00167
Fig. 1 Taxi working and rest mode图1 出租车的工作和休息模式 |
Fig. 2 GPS space-time trajectories of taxi shift event图2 交接班事件的GPS时空轨迹 |
Fig. 3 Space-time sequential pattern of taxi shift图3 出租车交接班行为的时空序列模式 |
Fig. 4 Histogram and fitted Gaussian distribution of the characteristics of taxi shift events图4 交接班事件序列特征直方图与高斯拟合分布 |
Fig. 5 The explanation of unoccupied distance图5 空载距离示意图 |
Fig. 6 The identification procedures of taxi shift event图6 出租车交接班事件识别流程 |
Fig. 7 Temporal distribution of the taxis shift numbers图7 交接班车辆数的时间分布 |
Fig. 8 Spatial distribution of parking location for taxis shift change图8 交接班地点空间分布 |
Fig. 9 Spatial distribution of parking location for taxis shift based on administrative districts图9 基于行政区的交接班地点空间分布 |
Fig. 10 The dynamic of taxis taking shift in 17:00-19:00图10 17:00-19:00内出租车交接班数量变化 |
Fig. 11 Spatial distribution of serious irregular taxi shift change图11 严重违规车辆交接班地点分布 |
The authors have declared that no competing interests exist.
[1] |
[
|
[2] |
[
|
[3] |
[
|
[4] |
[
|
[5] |
[
|
[6] |
[
|
[7] |
|
[8] |
|
[9] |
[
|
[10] |
|
[11] |
|
[12] |
|
[13] |
[
|
[14] |
|
[15] |
|
[16] |
|
[17] |
[
|
[18] |
[
|
/
〈 |
|
〉 |