Appendix VI
Table of Sizes for Warning, Mandatory and Prohibitory Signs
(see paragraph 49)
| Type of sign | Inches of letter height used on advance direction signs | |||
| Specially reduced size | 3-4 | 6-8 | 10-12 | |
| Warning sign (base of triangle) | — | 30 in. | 60 in. | 90 in. |
| Mandatory and prohibitory signs (diameter) | 20 in. (for repeater signs and in urban areas) |
24 in. | 48 in. | 72 in. |
| Halt sign (diameter). | — | 30 in. | 60 in. | 90 in. |
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