What is the basic form of prompt signs in safety signs?

The basic form of warning signs in safety signs is rectangle and white line pattern with green background (red background for fire prevention).

safety signs are divided into four categories: prohibition signs, warning signs, instruction signs and prompt signs.

the meaning of the prompt sign is to provide people with some information (such as indicating safety facilities or places, etc.).

general warning signs refer to the direction of safe passage and emergency exit. For example, in a dangerous production workshop, when an accident occurs, the operator is required to evacuate from the safe passage quickly, which requires that a "prompt sign" indicating the direction of the safe passage be installed near the safe passage.

its basic form is a rectangular frame with white graphic symbols and green substrate, and the rectangle has a sense of weight and distinctiveness. In addition, the prompt sign also needs enough places to write words and draw arrows to prompt the necessary information, so it is appropriate to use a rectangle.