基于重庆市出租车轨迹数据的城市居民出行时空特征分析

Analysis of Spati-temporal Travel Characteristics of Urban Residents in Chongqing Based on Taxi Trajectory Data

为缓解城市交通拥堵现象,探究居民日常出行行为需求的时空规律及分析城市空间形态特征。以重庆市主城区为例,结合69100万条出租车轨迹数据,从时空角度分析重庆市的城市居民出行时空特征和城市空间布局,为出租车运营和城市交通拥堵治理提供定量的参考依据。结果表明,1)出租车调度选在0:00—6:00和15:00—18:00时段更优;2)重庆居民乘坐出租出行多以短途为主;3)在区域联系密切的对外交通出行要地中,重庆北站与重庆站连线呈带状分布特征,以汽车站为中心呈星型分布,五大主要商圈连线聚集近似正五边形。

In order to alleviate urban traffic congestion,explore the spati-temporal law of residents’daily travel behavior needs,and analyze the characteristics of urban space form.Taking the main urban area of Chongqing as an example,combined with 691 million taxi trajectory data.From the perspective of time and space,the spatial-temporal characteristics of urban residents’travel and spatial layout in Chongqing are analyzed,which provided a quantitative reference for taxi operation and urban traffic congestion governance.The results show that:1)it is better to schedule taxis between 0:00—6:00 and 15:00—18:00;2)Chongqing residents mainly travel by taxi for short distances;3)Important places for external transportation with close regional connections,the connection between Chongqing North Railway Station and Chongqing Railway Station is distributed in a belt shape,and the bus station is the center in a star-shaped distribution;the connections between the five major business districts are gathered in an approximate regular pentagon.