No matter how wonderfully designed a sign is, it won’t be effective if nobody can see it. Placement is key to maximizing visibility but there are other factors to consider. The two keys to boosting the visibility of a commercial sign are size and illumination. The bigger a sign, the further its range of visibility. Illumination makes commercial signs visible at night, in the rain, in the snow, and in the fog. Indoors, large and illuminated signs can outcompete other visual stimuli.