When on a two-lane road, when it is no longer safe to pass a car (by going into the oncoming lane) - there is a sign "Do No Pass". Until my driving exam, I never understood why those signs where there. Because I thought it meant I should pass beyond that point. As if danger were ahead!!
A childhood belief about road signs

others believed things like this
- I used to believe the Do Not Pass signs on the roads meant you were'nt aloud to pass the sign. I was 14.Anon
- when the sign on the highway said do not pass and dad did i thought he would be in great dangerAnon
- I used to think that we were breaking a law every time my mom passed a "Do Not Pass" sign on the road. — Kyra
- I used to think that the Eagle's song "Life in the Fast Lane" was actually "Pike in the Bass Lane."— Quilla
- I believed that the gap between the double yellow lines in the road was a special lane for motorcycles.— Joel
- I used to believe that you could pass things down the telephone.Anon