Operation management method, server, and system

An operation management method for managing a plurality of circulating buses, each circulating bus being introduced into a circulation route from a base and returning to the base to be switched with another circulating bus after traveling a specified number of laps, includes storing, by a server, an operation schedule of the plurality of circulating buses, monitoring, by the server, a status of the plurality of circulating buses, and revising, by the server, the operation schedule when a first circulating bus traveling on the circulation route experiences failure before completing a specified number of laps, the operation schedule being revised so that a second circulating bus is introduced into the circulation route and returns to the base to be switched with a third circulating bus before completing the specified number of laps.