The photo gets taken and sent to the Council with a note that says "hello, council, someone keeps leaving this car parked illegally on double yellows. It's blocking sight lines at a busy junction." The council sends an enforcement officer along, tickets the car, the silly owner doesn't park there again, and there is no crash caused by sight lines being blocked. It ain't complicated. If you can't see the cars are parked then I think you need to give up driving that's if you drive and that's as you say not complicated or hard or is it