SpeedFinder Vehicle Activated Radar Sign | Smiley FaceOur smiley face speed indicating radar sign can be used to convey both a positive smiley face to those who are not exceeding the speed limit and a negative red frowning face to those who are going too fast. The quick and obvious colour difference quickly conveys either a positive or negative message to drivers. We have engineered this sign to be exceptionally easy to install, with all battery and solar options requiring no specialist knowledge or