A method carried out by a computer for coordinating a route comprising a public transportation leg using a vehicle operated by a public transportation service and characterized by an estimated arrival time; and a subsequent ordered transportation leg using a vehicle operated by an ordered transportation service, the method comprising: transmitting to the ordered transportation service an order for a vehicle to provide the ordered transportation leg, the order being characterized by an estimated departure time; tracking real-time progress of the user along the public transportation leg; responsive to the tracking detecting a delay in the public transportation leg, determining a later departure time for the ordered transportation leg; transmitting to the ordered transportation service a revised order for the ordered transportation leg comprising the later departure time; and sending to the mobile communication device a rescheduling notification comprising the later departure time.