Dunno, but if you look at some of the image gallery photos here, there's a very bright specular reflection from a number of vehicles. Police radar is right in

Dunno, but if you look at some of the image gallery photos here, there's a very bright specular reflection from a number of vehicles. Police radar is right in this frequency range, so it would make sense of they have a retroreflective effect built into the paint on the plate. https://www.sandia.gov/radar/imagery/index.html https://www.sandia.gov/radar/imagery/index.html Example: https://www.sandia.gov/radar/_assets/images/gallery/ka-band.png https://www.sandia.gov/radar/_assets/images/gallery/ka-band....