I still flash my lights. Most people look at me like I'm nuts.....guess I'm older than I thought.I was coming back from Gore OK on a fishing trip I had my V65 Magna and my buddy on the back.
Usually cruising at a limit above the speed limit.
I come up on this old pickup truck and he flashes his lights at me after I passed him.
I am no dummy so I slow it down to his speed and get beside him and I point at my Escort radar detector I have stuck on my clutch reservoir.
He holds up the Mic for his CB radio and shakes his head.
I chime in behind him and sure enough a few miles up the road is a Smokey that is flicking his radar on just for a moment.
The Escort would have got me a ticket It had X- K-KA this was back in the 1990's
I wonder if you get Smokey reports today on the CB radio.
Used to people would flash their lights to warn you.