Designing the ultimate wayfinding typeface | Ralf Herrmann’s Typography Weblog
Over the last couple of years I have researched the design and use of typefaces used for signage, especially road signage.
While road signs in general are scientifically researched for many decades in western countries, little is known about the parameters that lead to a maximum legibility of typefaces used in signage. And therefore the range of typefaces used on road signs is pretty wide.

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