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,are studied.The results show that there is a significant difference between public traffic card (IC card) and magnetic card.Based on statistical analysis, the time interval of passengers passing through three-roller gates is determined by taking into consideration the main types of commuting passengers with different sizes of packages and different cards in railway station.The calculation method of the three-roller gates capacity and the calibration of the main parameters are 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.