2025 Canada Catalog - Flipbook - Page 287
MINIMUM
REQUIRED
LETTER HEIGHT
100 ft.
4"
250 ft.
10"
360 ft. (city block)
16"
500 ft.
22"
750 ft.
33"
1,000 ft.
43"
1,320 ft. (1/4 mile)
57"
Letter Visibility Chart
This letter visibility chart is based upon information provided by the Pennsylvania Transportation Institute, Penn State University and
the United States Sign Council (USSC).
VISIBILITY TIPS
VIEWING
DISTANCE
Calculations based on an externally (or naturally) lit sign with all upper case Helvetica letters utilizing optimal negative space. Factors that may affect required
letter size are: colour scheme, font selection, traf昀椀c and weather conditions, or
sign standoff. Please refer to the complete study for additional information. For
further details contact the USSC at 1-215-785-1922.
Braille and ADA Standards
Below are the ADA standards for wayfinding signage and braille. Braille should always
be left aligned and then centered on the plaque when there is more than one line. Gemini
requires that braille dot size is .063", line height is .253", as well as .14" between lines.
Any graphics on the plaque must fit
inside a 6" height minimum field.
This field spans from the inside of the
outer border to the top of the text or
any raised entity beneath the graphic.
Maximum Letter Height = 2"
Minimum stroke = .625"
Maximum stroke of the
letter cannot exceed 15% of
the letter height
Fonts must be Sans Serif
and all capital letters
ADA Minimum gap
between letters is .125"
Braille must have .375" gap
all around between itself and
any other raised elements
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