Sign size and viewing distances
The size of the sign is defined by the maximum viewing distance from which the sign is understandable. The viewing distance at which a sign of a particular size is conspicuous and comprehensible depends on the illumination of the sign and the amount of detail it contains.
![](/fotos/editor2/d-h-z.png)
![](/fotos/editor2/dimensao.jpg)
It is fundamental to adjust the signs sizes to the facilities characteristics and to the intended viewing distance, in order to ensure an effective safety signage.