I can't say for sure if they have a device, but this is what happened to me.
I was on my way to Ottawa driving from Toronto on highway 7. After it got dark I stepped on it a bit, but no more than 110. At some point driving on a straight line I saw a car coming on the other side of the road. Can't really tell if it's a cruiser or not if they don't have some light coming from behind...
Anyway when he was about 100 meters out when he turns on the lightshow. I dropped below 90 mighty fast and he just kept going his way.
So what do you think? I think they do.
