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Depends what sign exactly.
Some signs (such as modern road signage) was developed quickly after the advent of the car, in order to regulate traffic an artificial system was created and implemented; this has now become an almost international standard. Prior to this there were basic road marking signs attached to posts and poles as well as those carved on large road makers.
Other forms of signage have been in use since man first settled in areas and had to demarcate areas or show direction to an area.
The appeal of visual signage is that it know no language barriers; for example, a toilet sign is basically the same in the UK or China.
What else can I help you with?
Where was the addition sign invented?
The addition sign was invented in Oakland California.
Who invented the addition sign?
The plus or addition sign was invented by Michael Stiple in 1544
How were the plus and minus sign invented?
The person who invented the plus sign is the same as the minus
Who invented the sign in email?
E-mail and @ sign were invented by Ray Tomlinson. by aliou waiga.
Who invented the multiplacation sign?
William Oughtred invented it in 1631.
Who invented the plus sign?
It is invented by Michael Stiple in 1544
What year was sign language invented?
It was invented in 1620
Who invented minus sign?
No one invented the minus sign or at least none that we know of, it is simply part of the evolution of mathmatics. The minus sign we use appeared in the 1400s
Who invented the subtraction sign in math?
Obviously it was not invented. It was always just there.
When was the subtraction sign invented?
ghy
Why was the percent sign invented?
1817
Who and when was invented the octagonal stop sign?
it was invented in 1976 by sir Morgan Harvey
