Approaching Bus OD Matrices Based on Data Reduced from Bus IC Cards

Abstract

Bus OD matrices are crucial inputs for bus dispatching and bus network optimization. With a wide application of IC (Intelligent card) card technologies, it is both meaningful and valuable to investigate how the data collected from bus IC cards can be fully utilized to approach OD matrices and calculate the numbers of bus transfers and trip frequencies. Based on the characteristics of bus IC card data, this paper develops methods for estimating both stop-based ODs and link-based ODs between two stops using data mining technology. The paper further considers what information else can be obtained from IC card data. The proposed methods aim to approach bus stop OD data and regional trip OD data using a systematic framework based on GIS. Meanwhile, a flow chart is given in the paper to help reduce bus OD data. It was concluded that GIS, which combines data processing function with geographical attributes, is the best way to process IC card data. Using this method, the problems related to bus OD matrices, transfer times, and trip frequencies, can be resolved effectively.

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