49 CFR Part 27 - Nondiscrimination on the Basis of Disability in Programs or Activities Receiving Federal Financial Assistance (with amendments issued through Aug. 2015)

(7) Display screen. The display screen must comply with paragraphs (k)(7)(i) and (ii) of this section.

(i) Visibility. The display screen must be visible from a point located 40 inches (1015 mm) above the center of the clear floor space in front of the automated kiosk.

(ii) Characters. Characters displayed on the screen must be in a sans serif font. Characters must be 3/16 inch (4.8 mm) high minimum based on the uppercase letter “I.” Characters must contrast with their background with a minimum luminosity contrast ratio of 3:1.