A geolocating method to determine a traffic flow at a point-of-interest (POI). The method comprises clustering geolocation data associated with a plurality of mobile communication devices by an analysis application executing on a computer system based on different clustering algorithms associated with different travel modes identified by the geolocation data, for each of the plurality of mobile communication devices, determining travel routes traversed by the mobile communication device by the analysis application based on the clustering of the geolocation data and based on a map of travel routes, where each of the travel routes is one of a highway travel route, a light rail travel route, or a footpath travel route, and, for each of a plurality of POIs, determining by the analysis application a number of different mobile communication devices that intersect with the POI based on the travel routes traversed by the mobile communication devices.