Warning · Rectangle · MUTCD 11th edition
W11-12P Emergency Signal Ahead (plaque)
W11-12P Emergency Signal Ahead plaque from the MUTCD 11th edition: 3 standard sizes (24" × 18", 30" × 24", and 36" × 30"), with letter heights, border widths, and colors.
01
Standard sizes
| Size | Road type | Border | Corner radius | LettersEMERGENCY SIGNAL AHEAD |
|---|---|---|---|---|
| 24" × 18" | — | 5/8" | 1 1/2" | 3"FHWA Series C |
| 30" × 24" | — | 3/4" | 1 7/8" | 4"FHWA Series C |
| 36" × 30" | Conventional Road, Single LaneConventional Road, Multi-LaneExpressway | 7/8" | 2 1/4" | 4 1/4"FHWA Series C |
02
Colors
- Legend
- Black
- Background
- Yellow
- Border
- Black
03
Standard reference
- SHS 2024 sheet 3-158 (W11-12P, 24x18 in); MUTCD 11th ed. Table 2C-1
- SHS 2024 sheet 3-158 (W11-12P, 30x24 in); MUTCD 11th ed. Table 2C-1
- SHS 2024 sheet 3-158 (W11-12P, 36x30 in); MUTCD 11th ed. Table 2C-1
04
