Flow Map

http://mappa.mundi.net/maps/maps_014/

A flow map is a map that tracts the movement of a particular set of data and can also show the intensity that it travels. The intensity is represented by the thickness of the line, with the thicker the line the more intense it travels. In the map I chose tracts the movement of traffic flow in Europe. The thicker lines represent the amount of traffic annually between the two countries.