Movement Prohibition - No U or Left Turn (R3-18)

Regulatory sign

R3-18 — Movement Prohibition - No U or Left Turn

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Sign information

Federal designation: R3-18
Category: Regulatory
Device type: Sign
MUTCD reference: §2B.26 • Table 2B-1
MUTCD reference: Chapter 2B; see sign-specific section

Size / fabrication

Conventional — Single Lane: 24 x 24 in.
Conventional — Multi-Lane: 36 x 36 in.
Expressway: 36 x 36 in.
Oversized: 48 x 48 in.

Reference: §2B.26 • Table 2B-1

FHWA Standard Highway Signs

Dimensioned layout

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

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Application & sources

Controls or restricts road-user behavior as indicated by the legend or symbol.

FHWA MUTCD source · FHWA Standard Highway Signs source