Safety signs must be used whenever a risk or danger cannot be avoided adequately or reduced in one more way. Before installing safety signs an company should examine if the hazard can become avoided or reduced by collective safety measures or safer ways of carrying it out. Safety signs are also known as warnings of danger, whether temporary or permanent, at this places where these kind of hazards exist. There are numerous types of safety sings such as danger signs, warning signs, caution signs along with special signs to call a few. The danger signs mostly make use of red, black along with white colors.