What Are the Flat Panel Antennas For?
From The News Tribune: http://www.thenewstribune.com/2011/07/18/1748822/antennas-measure-traffic-flow.html The flat panel antennas that have popped up on area roads are used to measure traffic flow. They are made by a company called Wavetronix. This must be a way around having to physically add traffic sensor loops to the road, very similar to using cameras to change lights versus [...]