The header helps get the sign noticed.
Installation and ordering costs are often more than the sign itself.
As a result, a durable sign always pays for itself with reduced labor.
Although the use of a symbol is strongly encouraged in order to better
communicate hazard information across language barriers, more and
more warnings themselves are now shown in two languages.
The new ANSI standard for safety signs emphasizes custom design. It
suggests that you add an Action statement, consequences,
a symbol, use mixed case and, in many situations, add emergency information.