Prospect of Technology for Public Transit Planning using Smart Card Data

초록

The smart card system has been used on all subways and busses in the Seoul metropolitan area since 2004. In the Seoul area, more than 90% of the passengers on public transportation use smart cards to pay their fare. The boarding and alighting information from the smart cards is used to calculate the origin and destination (OD) and total travel distance of each transit passenger. The smart card system in Seoul is an integrated system that works in both metro and buses. Therefore, we are able to see each passenger's complete travel route (trip chain), including the OD, which modes of transportation were taken, and which metro lines or bus routes were taken. The smart card system also enables us to obtain detailed information on individual transit usage and operation. Because of this, we have been able to collect a large amount of very specific data on public transit that can be used in public transport planning and operations. This paper proposes a method of using transit information derived from smart card data for transportation planning and operation. We have focused specifically on the concept of a Real OD (trip chain) database based on multi-modal trip chains. The technical prospect of demand analysis, service performance assessment, multi-modal transit assignment, and optimization is presented. In addition, several conceptual models of transit performance indices and transit assignment are proposed. Transit passenger and OD information collected from the smart card system is actual performance data, which is much more accurate than estimated data derived from surveys. Preliminary feasibility tests and verification procedures can be performed in a simulation that uses assignment and optimization models based on Real OD (trip chains). This simulation is expected to lead to an increase in rail project investments and improved passenger services.