Last night I was driving home from my job and on the horizon I saw blue lights going. I knew they were police lights, but I was just amazed at how far away I was able to see them. And even before I saw the actual car I was able to see the lights going on the other side of a hill. I assume they are LED lights, but whatever they are, they are super bright! It was almost blinding to drive by them, and even after I passed and had gotten a fair distance away they were still visible in my rear view mirror.