1. A computer-implemented method of displaying on a graphical map traffic flow data representing traffic conditions on a road system, the road system encompassing a predefined geographical region, the method comprising: obtaining traffic flow data for the road system; obtaining a selection of an object of interest within the geographical region, the object of interest having a corresponding geographical location; creating a 3D graphical map of at least a portion of the road system, wherein the 3D graphical map includes three dimensional models for landmarks and terrain; and displaying the traffic flow data and the object of interest on the 3D graphical map using a movable virtual camera to rotate the 3D graphical map around the object of interest.