Regulatory · Rectangle · MUTCD 11th edition

R4-13 Slow Vehicles Must Use Turn-Out Ahead

R4-13 Slow Vehicles Must Use Turn-Out Ahead sign from the MUTCD 11th edition: standard size (42" × 24"), with letter heights, border widths, and colors.

R4-13
Drawn at 42" × 24"

01

Standard sizes

SizeRoad typeBorderCorner radiusLettersSLOW VEHICLES MUST USE TURN - OUT AHEAD
42" × 24"Conventional Road, Single LaneConventional Road, Multi-Lane5/8"1 1/2"4"FHWA Series C

02

Colors

Legend
Black
Background
White
Border
Black

03

Standard reference

  • SHS 2024 sheet 2-182 (R4-13, 42 x 24); MUTCD 11th ed. Table 2B-1