Abstract:The process of passengers passing through three-roller gates in Shanghai during commute time is observed and analyzed in this paper, main influence factors on gate capacity——the size of the package, the way people use the card and the passenger group is studied. The results showed that there was significant difference between public traffic card (IC card) and magnetic card. By using statistical analysis, the time interval of passengers passing through three-roller gates is determined, when the main type of commuting passenger with the different size of package and different card in railway station is considered. The calculation method of the three-roller gates capacity and the calibration of the main parameters is put forward, which provide the necessary basis for the planning and design of the railway station three-roller gates, as well as the station's passenger operations and the development of emergency-response plans.