Regulatory · Rectangle · MUTCD 11th edition

R10-13 Emergency Signal

R10-13 Emergency Signal sign from the MUTCD 11th edition: 2 standard sizes (36" × 24" and 42" × 30"), with letter heights, border widths, and colors.

R10-13
Drawn at 36" × 24"

01

Standard sizes

SizeRoad typeBorderCorner radiusLettersEMERGENCY SIGNAL
36" × 24"Conventional Road, Single LaneConventional Road, Multi-Lane5/8"1 1/2"4 3/4"FHWA Series C
42" × 30"—3/4"1 7/8"6"FHWA Series C

02

Colors

Legend
Black
Background
White
Border
Black

03

Standard reference

  • SHS 2024 sheet 2-335 (R10-13, 36 x 24); MUTCD 11th ed. Table 2B-1
  • SHS 2024 sheet 2-335 (R10-13, 42 x 30); MUTCD 11th ed. Table 2B-1