Analysis of Travel Characteristics and Influence Factors of Shared Bicycles Based on POI-OD Matrix and GTWR
Spatial and temporal characteristics of shared bicycles reflect the travel requirements of citizens,and the mobility of bicycle travel shows the purpose of residents using shared bicycles.Based on the spatial and temporal distribution characteristics of 11 months′shared bicycles′traveling data in downtown east Chicago,combined with the distribution of POI,this paper establishes a POI-OD ma-trix to quantify the liquidity features of OD.Then,the correlation between various types of POI and the inflow and outflow of shared bicycles is quantitatively analyzed combined with GTWR.Results notify:(1)Peaking trend in the morning and evening and short-dis-tance travel are the main travel features of shared bicycles in the study area on weekdays.(2)POI-OD matrix shows that transporta-tion POI and catering POI are hotspots.(3)Factor analysis shows that count of outdoor leisure POI,catering POI,entertainment POI,working and education POI,and traffic and transportation POI have different positive impacts on the inflow and outflow of shared bicycles on weekdays and weekends,with decreasing degree of influence.While the number of and commercial and financial POI have negative impacts on the inflow and outflow of shared bicycles on weekdays and weekends among grids and the impacts of residential POI are significant.
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