What do they call this person who holds the "Stop" sign so people can pass the pedestrian lane safely?

He/she is not a policeman/policewoman, not a security guard nor a traffic police. please help.|||The crossing guard|||Crossing guard or school crossing guard depending upon what part of the world you live in. Different areas give them different names or slang terms.|||they could probably be a crossing guard or a temporary traffic director.|||The crossing guard :)|||lollypop lady! or lollypop man! always called there here in Australia.|||This is a crossing guard.|||For most places they are called crossing guards