• The prevailing red and white safety signs for which denotes that certain activity or behavior is strictly prohibited or illegal. Such as the ?No smoking signs? and “No access signs?.
• The warning triangle with yellow color and black borders signifies all kinds of possible dangers. The symbol within the yellow triangle varies according to the hazards. For example the lightning strike signifies an electrical danger whereas the exclamation signs denote general hazards.
• A certain type of white and blue signs denotes that the certain types of action is mandatory or must be taken. This type of signs is generally used to signify that certain type of protective equipment must be used or worn.
• The red and white signs are used to denote all fire equipments like fire hoses, extinguishers and alarm call points. But certain types of extinguisher signs are further coded to signify the different types of use. For the example CO2 (black) signifies that it is safe to use for the electrical fires but suitable to be used in small space.
• The green and white sign signifies the safe conditions. These types of signs are used to inform people of escape procedures and escape routes. The common signs are ?Exit? or the ?Fire Exit? signs along with the direction of an arrow.

It should be remember that safety signs and symbols are not the perfect substitute for the safety training and procedures. It is simply the way to remind the people of the possible danger and the different ways to avoid these dangers. It is very significant to understand and read these signs or symbols as they warn us against the possible accident.