Flow Map

http://www.google.com/imgres?imgurl=http://3.bp.blogspot.com/-cZHFAHAO53s/TiBjEBfKNkI/AAAAAAAAAAw/I5xITI7cYmE/s1600/Flow.jpg&imgrefurl=http://50mapsfromericawest.blogspot.com/2011/07/httpwww.html&h=524&w=723&sz=194&tbnid=SlE37CWJGyVCEM:&tbnh=90&tbnw=124&zoom=1&docid=i2rUgMs_S8TeEM&hl=en&sa=X&ei=JoITT9K-EtPZtgebut2dAg&ved=0CDkQ9QEwAw&dur=704

This is a simple flow map. It can be used in so many different industries. It shows how something flows through a region. The one above shows truck flows out of Texas and where to go. I'm sure trucking and mapping it can be very complicated but this condenses it down in to a smaller image so it can be viewed with more ease.