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- USSC Sign
Legibility Rules of Thumb
Sign legibility covered in a simple to use rule of thumb format
suitable for general application. Essentially synthesizes the
more detailed analysis of USSC research into legibility and sign
size determinants for both perpendicular and parallel signs. Click here to download PDF
- USSC Guideline
Sign Standards for On-Premise Signs
Definitive research based approach to sign size, legibility,
and height. Utilizes tables, charts, and equations designed
to facilitate the calculation of perpendicular sign letter
height and copy area, negative space, overall sign size, and
sign height as functions of the speed of travel using factors
such as message size, message scan time, viewer reaction time
and distance, and copy area. Click
here to download PDF
- USSC
Determination of Parallel Sign Legibility and Letter Heights
Provides legibility values for signs parallel
to a motorist's point of view which are inherently more difficult
to read than perpendicular signs mounted directly in front
of the motorist. By means of a mathematical model, letter
heights necessary for adequate parallel sign legibility can
be calculated. Also provides equations for calculation of
parallel sign letter heights as well as height look-up tables
for typical parallel sign scenarios. Click
here to
download PDF
- USSC Computation
Equations
Algebraic equations for calculation of various aspects of letter
height and sign size for both perpendicular and parallel signs
under varied conditions; calculation of viewer reaction time
for known sign sizes; and calculation of projection distance
allowing for maximum projection limits at centerline of building.
Also includces tabular USSC Legibility Index. Click here to download PDF
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