STREET CLOSED - LOCAL TRAFFIC ONLY Sign Requirements
This guide summarizes the MUTCD requirements and practical application guidance for the R11-3a STREET CLOSED - LOCAL TRAFFIC ONLY sign. Use this resource to understand when it is required, how to place it correctly, and how to maintain clear visibility for safe operations.
When It Is Used
Street closures that preserve local property access
Where It Applies
At the closure point (activity area), typically on a barricade.
Placement Basics
Mount at the standard height and setback for the roadway with clear sight lines.
Visibility / Reflectivity
High reflectivity and clear sight lines are essential day and night.
1. When a STREET CLOSED - LOCAL TRAFFIC ONLY Sign Is Used
A regulatory sign stating that the street is closed except to local traffic, with the word legend STREET CLOSED / LOCAL TRAFFIC ONLY (a distance line is added on the advance version). Through traffic must use a detour; residents, businesses, and deliveries within the closure may proceed.
- Street closures that preserve local property access
- Advance sign carries a distance line (e.g. X MILES AHEAD)
- Used with detour route markers for through traffic
2. How and Where It Applies
In the field, R11-3a Street Closed - Local Traffic Only is typically positioned at the at the closure point (activity area), typically on a barricade. Common deployments include street closures that preserve local property access; advance sign carries a distance line (e.g. X MILES AHEAD); used with detour route markers for through traffic. Always confirm its size, retroreflective sheeting, spacing, and placement against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.
3. Placement and Application Notes
Position R11-3a at the closure point (activity area), typically on a barricade.
- Place the sign where drivers have a clear, unobstructed view on approach.
- Mount at the standard height and setback from the edge of the traveled way.
- Do not mount with other signs on the same post unless space constraints require it.
4. Standard Sizes and Visibility Considerations
Typical minimum: 48" × 30".
- Choose size based on roadway speed, sight distance, and mounting location.
- Maintain high retroreflectivity for maximum night and adverse-weather visibility.
5. California Notes
Used in California where a street is closed to through traffic but local access to properties inside the closure is maintained, typically with a distance legend on the advance sign and detour route markers for through traffic.
Go to California Notes6. Common Field or Planning Mistakes
- Closure limits on the plan do not match the approved permit exactly.
- Closure not backed by advance warning and a signed detour.
- Local-access provisions unclear (especially for ROAD CLOSED TO THRU TRAFFIC).
- Barricade type (e.g., Type III) not specified.
Related Resources
View All R-Series Signs
Educational reference only. This is not an official Caltrans, FHWA, or local agency publication and is not legal or engineering advice. Always verify sign selection, size, placement, spacing, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency’s requirements. Local jurisdictions may impose additional requirements, and final selection, placement, and dimensions may require engineering judgment or agency approval. Written against California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition. Official sources last verified June 2026.
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