Signage and Wayfinding Design – Type Sizes
Setting the right size
Cap heights for distance and pace
Pedestrian type sizes
Recommended cap height of letters for reading distances
Tactile lettering 15 mm (55 mm maximum).
2 metres – 6 mm
4 metres – 12 mm (17 mm – door signs)
6 metres – 20 mm (building directory listings)
8 metres – 25 mm (30 mm, internal direction signs)
12 metres – 40 mm
15 metres – 50 mm (60 mm external pedestrian direction signs)
25 metres – 80 mm
40 metres – 130 mm
50 metres – 150 mm
Vision impaired type sizes
Recommended minimum height of letters for viewing by people with low vision:
15 mm – Building Directories
30 mm – Identification Signs
40 mm – Internal information & directional
120 mm – Location information
200 mm – Building facia/facade
Source NHS Wayfinding Guidelines, Australian Standard AS 1428.2
Drivers
60 mm – low speed environments: driver direction signs, internal roads, and carparks