OD Matrix Inference For Bus Trip Based On GPS And IC Card Data

Urban transit planning is based on OD matrix of transit,which also supports transit network planning and optimization.OD matrix of transit is collected traditionally by a manual survey method,requiring a lot of manpower and resources,but obtaining less samples with low precision.The information technology like bus card charging system and GPS system has been gradually introduced into the urban transit system,opening a new route for basic data collection of urban transit.But bus card charging system is still a one-vote system in most domestic cities,data of bus IC card only have the getting-on records without the getting-off records,which fails to directly access the travel information.Therefore,how to effectively obtain OD matrix of transit is of great practical significance to the improvement of urban transit's service level.To achieve this goal,the bus IC data and GPS data are used to calculate OD matrix of transit in the paper.In this paper,the bus IC card data and GPS data are analyzed and processed at first.According to the characteristics of bus IC card data,a method of calculating the proportion of passenger who use bus IC card is put forward.Site information of passengers lacks in the one-vote bus IC card system,the bus GPS recording time and bus IC card credit card time is matched to access to getting-on location information of passengers to identify getting-on stations of passengers.And use space-time constraints as passenger transfer identification,the identification of the transfer is carried out by two adjacent time intervals between passenger's bus IC card and the spatial distance between two stations.At the same time,the introduction of subway IC card data as supplementary data.Improve the passengers' travel chains,and use the passengers' getting-off station probability model based on travel chain to identify passengers' getting-off stations.Then establish the OD matrix of bus station,and accomplish sampling expansion by bus IC card usage ratio and recognition success rate.According to the spatial relationship between the station and the traffic zone,the OD matrix between bus stations is transformed into the OD matrix of transit.Finally,taking Shenzhen City as an example,the validity and feasibility of the algorithm are given.