The present invention provides methods for supporting a public transportation by using a Vehicle to Everything (V2X) at a Passenger Control Center (PCC) in a wireless access system. One of the methods comprising steps of tracking taxis in a coverage of the PCC in order to support the public transportation; transmitting a first Vehicle to Infrastructure (V2I) or Vehicle to Network (V2N) message triggering a public transportation service to the tracked taxis; receiving a second V2I or V2N message from one or more taxis including location information of each of the taxis; collecting traffic situation information on an area including the PCC; deciding candidate taxis based on the location information and the traffic situation information; and transmitting a third V2I or V2N message indicating pick up passengers at a specific taxi stand to the candidate taxis, wherein each of the taxis is a vehicle user equipment (VUE).