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Temporary · Rectangle · MUTCD 11th edition

W23-1 Slow Traffic Ahead

W23-1 Slow Traffic Ahead sign from the MUTCD 11th edition: standard size (48" × 24"), with letter heights, border widths, and colors.

Open this sign in the editorStandard sizes
W23-1
Drawn at 48" × 24"

01

Standard sizes

SizeRoad typeBorderCorner radiusLettersSLOW TRAFFIC AHEAD
48" × 24"—3/4"1 7/8"5"FHWA Series C

02

Colors

Legend
Black
Background
Orange
Border
Black

03

Standard reference

  • SHS 2024 sheet 5-46 (W23-1, 48x24 in); MUTCD 11th ed. Table 2C-1