Letter Visibility Chart
This letter visibility chart has been made for you based upon information provided by Pennsylvania Transportation Institute, Penn State University and the United States Sign Council (USSC). c1998
Calculations based on externally (or naturally) lit sign with all upper case Helvetica letters utilizing optimal negative space. Factors that may affect required letter size are: color scheme, font selection, traffic and weather conditions, or sign standoff.
|Viewing Distance||Minimum Required
|360 ft (city block)||16"|
|1320 ft (1/4 mile)||57"|