R5-1 — Do Not Enter
Overview
The R5-1 Do Not Enter sign is a regulatory sign in red and white. It prohibits entry or movement in the wrong direction.
Requirements
Placeholder requirements for the R5-1. Document the conditions under which this sign is required, applicable regulatory language, and common compliance failures associated with it.
- Placeholder requirement one.
- Placeholder requirement two.
- Placeholder requirement three.
Placement & Installation
Placeholder placement and installation guidance for the Do Not Enter. Cover advance-warning distances, mounting height, lateral offset, and spacing relative to the work area and posted speed.
Dimensions & Specifications
| Application | Standard Size |
|---|---|
| Conventional Road | 30 x 30 in |
| Expressway / Freeway | 48 x 48 in |
| Minimum | 24 x 24 in |
MUTCD Reference
MUTCD § 2B.32. Governed by MUTCD § 2B.32. This is a regulatory sign; standard sizes come from MUTCD Part 2 — confirm the size and application against the current California MUTCD.
This page provides general educational information only. It is not legal advice, engineering advice, or agency approval. Requirements vary by jurisdiction, project type, agency, roadway, permit condition, and approved plan.
