ABSTRACT
The concept explanation of the indicators is as following:
1. Position: the place that safety signs are set in the workplace;
2. Color: the color of safety signs; 3. Brightness: the level of lighting that safety signs
are in the workplace; 4. Size: the size of safety signs; 5. Pattern: the main part of the safety signs
graphics; 6. Text messages: the auxiliary information of
safety signs; 7. Typesetting: the order of several signs being set
together;
The indications of (1)∼(4) determine the significance of safety signs, namely safety signs need to have enough staff to attract significant attention; the indications of (5)∼(7) determine the comprehensibility of safety signs, and the comprehensibility is the key of safety signs to be identified.
