I recently drove a 1800 mile trip. Part of it took me on I-20 between Birmingham, AL & Atlanta. On that stretch of the road on the GA side I often saw LEO SUV's parked perpendicular to the road, often more than one in line of site. I use a V1 and on both legs to destination and back I saw those vehicles but never did I get any signals from them.
Does anyone know what they use or what they are there for?