The Internet Protocol probe car (IPCar) project in Japan equipped probe cars (consisting of taxis and buses) with GPS. The aim of this project is to explore feasible real time applications of IPCar data either as a stand alone data source or with other data sources such as detector counts and automatic vehicle identification (AVI) travel time. The initial focus of this project is to provide travel time information. This study focuses on a data cleansing procedure consisting of 6 steps to determine the OD pattern of the probes. The cleansing process addresses data errors and searches for trip ends and the results show that the cleansed data was accurate in terms of trip length distribution. The OD pattern gives a macroscopic view of the taxi movement and shows that the main generator and attractor of trips are areas around Sakuragi-cho, Yokohama station, Honmoku, Negishi station and Totsuka. (Author/publisher) For the covering entry of this conference, please see ITRD abstract no. E208431.
Samenvatting