School sign

S4-4P — When Flashing (plaque)

S4-4P (When Flashing (plaque)) is an official MUTCD traffic sign designation within the school sign family. Standard vector graphics are published by FHWA under Standard Highway Signs.

Designation

S4-4P

Official sign name

When Flashing (plaque)

Sign family

School

Sign series

S4 Series

Primary source

FHWA MUTCD 11th Edition

Artwork status

2 artwork variants matched

Artwork release

Standard Highway Signs release 3

Artwork format

SVG

Artwork variants

2 (24 × 12 in, 36 × 18 in)