Regulatory · Rectangle · MUTCD 11th edition
R4-12 Slow Vehicles with XX or More Following Vehicles Must Use Turn-Out
R4-12 Slow Vehicles with XX or More Following Vehicles Must Use Turn-Out sign from the MUTCD 11th edition: 2 standard sizes (42" × 24" and 72" × 42"), with letter heights, border widths, and colors.
01
Standard sizes
| Size | Road type | Border | Corner radius | LettersSLOW VEHICLES | LettersWITH 5 OR MORE FOLLOWING VEHICLES MUST USE TURN - OUT |
|---|---|---|---|---|---|
| 42" × 24" | Conventional Road, Single LaneConventional Road, Multi-Lane | 5/8" | 1 1/2" | 4"FHWA Series C | 3"FHWA Series C |
| 72" × 42" | — | 1 1/4" | 3" | 6"FHWA Series C | 5"FHWA Series C |
02
Colors
- Legend
- Black
- Background
- White
- Border
- Black
03
Standard reference
- SHS 2024 sheet 2-181 (R4-12, 42 x 24); MUTCD 11th ed. Table 2B-1
- SHS 2024 sheet 2-181 (R4-12, 72 x 42); MUTCD 11th ed. Table 2B-1
04
