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Believe it or not, it's important to get the type size right for your sign. Too small and you can't see it, too large and it looks silly. Take a look at the PDF for guidance on the appropriate size of text for viewing distance.
Distance | Recommended Cap Height |
1 Metre | 5mm |
5 Metres | 13mm |
10 Metres | 19mm |
20 Metres | 38mm |
50 Metres | 100mm |
75 Metres | 150mm |
Ensure your sign is clearly legible for your customers’ requirements. First, measure the expected viewing distance for your sign. Then, refer to our chart, left, to find our minimum recommended cap heights. These are average sizes for sans serif typefaces, but should be used as a guide as this can vary with text styles, colours and contrasts.
Driving Speed | X-Height | Recognition Range |
20 - 30mph | 75mm | 20m - 50m |
20 - 30mph | 100mm | 30m - 90m |
30 - 40mph | 125mm | 30m - 90m |
40 - 50mph | 150mm | 30m - 90m |
50 - 60mph | 200mm | 40m - 120m |
60-70mph | 250mm | 50m - 200m |
70mph | 300mm | 50m - 200m |
Your traffic sign should be easy to safely read by motorists. Use the table to calculate the recognition range you’ll achieve with different minimum type sizes at varying road speed conditions.
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