36 CFR Part 1190, Proposed Accessibility Guidelines for Pedestrian Facilities in the Public Right-of-Way: Notice of Proposed Rulemaking (NPRM)
R410.6 Character Height. Minimum character height shall comply with Table R410.2.5. Viewing distance shall be measured as the horizontal distance between the character and an obstruction preventing further approach towards the sign. Character height shall be based on the uppercase letter "I".
Table R410.6 Visual Character Height
| Height to Finish Surface from Baseline of Character | Horizontal Viewing Distance | Minimum Character Height |
| 1.0 m (3.3 ft) to less than or equal to 1.8 m (5.8 ft) | Less than 1.8 m (6.0 ft) | 16 mm (0.625 in) |
| 1.8 m (6.0 ft) and greater | 16 mm (0.625 in), plus 3.2 mm (0.125 in) per 0.3 m (1.0 ft) of viewing distance above 1.8 m (6.0 ft) | |
| Greater than 1.8 m (5.8 ft) to less than or equal to 3.0 m (10.0 ft) | Less than 4.6 m (15.0 ft) | 51 mm (2 in) |
| 4.6 m (15.0 ft) and greater | 16 mm (0.625 in), plus 3.2 mm (0.125 in) per 0.3 m (1.0 ft) of viewing distance above 1.8 m (6.0 ft) | |
| Greater than 3.0 m (10.0 ft) | Less than 6.4 m (21.0 ft) | 75 mm (3 in) |
| 6.4 m (21.0 ft) and greater | 75 mm (3 in), plus 3.2 mm (0.125 in) per 0.3 m (1.0 ft) of viewing distance above 6.4 m (21.0 ft) |
User Comments/Questions
Add Comment/Question