This is the new speed enforcement equipment "Enradd". Short for " Electronic-non radar device ".This is a infared timing device that is not detectable through conventional means , such as radar or laser detectors . You do not have to see the police car because the unit can be remotely operated .This is the newest equipment out there.Little information is known, such as :does the area have to be posted , or can they use Enradd at night. Be warned this may be coming to a town near you much info on the net , just search "Enradd" for more info