Abstract: Embodiments of the disclosure provide methods and systems for dispatching vehicles. The method may include determining, for a geographic region, supply and demand information for a transportation service during a predetermined time interval. The method may also include determining at least one over-supplied zone and at least one under-supplied zone within the geographic region, based on the supply and demand information. The method may further include notifying a vehicle in the at least one over-supplied zone information of the at least one under-supplied zone, the vehicle being available for providing the transportation service.