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Regulatory · Rectangle · California MUTCD

R2-4(CA) Speed Zone Ahead

R2-4(CA) Speed Zone Ahead sign from the California MUTCD: 3 standard sizes (24" × 30", 36" × 45", and 48" × 60"), with letter heights, border widths, and colors.

Open this sign in the editorStandard sizes
R2-4(CA)
Drawn at 24" × 30"

01

Standard sizes

SizeRoad typeBorderCorner radiusLetters35LettersZONE AHEAD
24" × 30"—5/8"1 1/2"10"FHWA Series E4"FHWA Series E
36" × 45"—7/8"2 1/4"15"FHWA Series E6"FHWA Series E
48" × 60"—1 1/4"3"20"FHWA Series E8"FHWA Series E

02

Colors

Legend
Black
Background
White
Border
Black

03

Standard reference

  • Caltrans sign specification R2-4(CA) dated 6/1/04 (24x30 in)
  • Caltrans sign specification R2-4(CA) dated 6/1/04 (36x45 in)
  • Caltrans sign specification R2-4(CA) dated 6/1/04 (48x60 in)