A few years ago I had to inspect one of the LED billboards. Since it was 70 feet in the air, I got delivered by manlift. On the way up, I wondered why they didn’t turn it off. Even though these things light up for miles, two feet away, you only see pinpricks of dull light. Really weird
On those boards, it would be very simple and easy to direct the light onto the board, instead of everywhere else including the eyes of the drivers.