US Road Signs
Slow Moving Vehicle (W21-4)
Temporary Traffic Control sign

W21-4 — Slow Moving Vehicle

Sign information

Federal designation
W21-4
Category
Temporary Traffic Control
Device type
Sign
Shape
Diamond / rectangle for plaque
Background
Orange
MUTCD reference
§6N.05 • Table 6H-1
MUTCD reference
Part 6; see sign-specific TTC provisions

Size / fabrication

Reference: §6N.05 • Table 6H-1

FHWA Standard Highway Signs

Dimensioned layout

Open original PDF

Drawing units: inches (in.) unless noted on the sheet.

100%
Preparing layout…

Application & sources

Used in temporary traffic-control and work-zone applications when applicable.