This application discloses a fusion billing method and
system for barrier-free transfer between metro and suburban railways with multiple fare rates. The method includes: acquiring structural data of the
rail transit network, including
station nodes, edges between adjacent stations, the length of each associated edge, and fee types, including metro fee types and suburban railway fee types; determining metro billing functions and suburban railway billing functions according to the fee types; when searching for a path between the origin and destination stations, determining the total
path length of any candidate path and the
path length belonging to the suburban railway for any candidate path formed; calculating the
path cost of the candidate path based on the total
path length and the suburban railway path length, using the fusion billing function, which includes both metro and suburban railway billing functions; and determining the shortest path from the origin to the destination
station with the minimum cost by comparing the path costs corresponding to different candidate paths.