What do traffic signs do?

Road traffic signs are signs that convey instructions, directions, warnings, bans and other signals to vehicles and pedestrians with words and graphic symbols. The logo is small, but it is very useful. It tells you the direction and name of the road and shows you the direction; Tell you that there are forks in the road, detours and mountain roads ahead, warning; Tell you that road is forbidden to pass and that road is forbidden to turn left; Tell you where to park, where to cross the street and so on. With these signs, it is very convenient to drive and walk at a glance. But also ensures the safety of driving and walking.