Both
examples warn of the same hazard but one of them was much easier and faster to
comprehend.
The
ANSI Z535 series of standards for the design, application, and use of signs,
colors, and symbols intended to identify and warn against specific hazards and
for other accident prevention purposes.
The three common characteristics to a compliant warning sing or label
include 1) A Signal Word such as DANGER, CAUTION, or WARNING; 2) A message
panel regarding the hazard; and 3) a Symbol Panel that graphically illustrates
the hazard being warned against. Compliance with this standard helps to
establish commonality and consistency in how warnings are presented and
conveyed and allows users to more easily understand what the hazard is and how
severe the risk is.