R11 Series — Road Closed Signs
Road Closure Signs · CA MUTCD Part 6, Chapter 6G
The R11 Series provides the regulatory signs used to legally close a roadway to all or some traffic. ROAD CLOSED (R11-2), ROAD CLOSED AHEAD (R11-3a), and ROAD CLOSED TO THRU TRAFFIC (R11-4) are the core closure signs for California permit-based closures, emergency closures, and planned construction or maintenance operations. These signs carry legal authority — displaying them without an authorizing permit or agency approval can expose the contractor to liability.
California Field Use Notes
R11 signs are placed at the point of closure and at advance approach points to redirect traffic before it reaches the closed segment. The combination of R11-3a (advance warning) followed by R11-2 (at the closure) is the standard California sequence. R11-4 allows through traffic to be blocked while local access is maintained. All R11 closures require an encroachment permit or agency work order in California.
Showing 6 of 6 signs
A regulatory sign stating that the road is closed to all traffic, posted at the closure point typically on a barricade across the roadway.
A regulatory sign advising that the road is closed ahead, often with a local-traffic or detour message, so drivers can prepare to turn or detour.
A regulatory sign stating that through travel is closed while still allowing local access to properties within the closure.
The R11-1 Keep Off Median sign is a California MUTCD road closure sign. It is shown here as an educational reference with the official FHWA Standard Highway Signs layout and California sizing guidance.
The R11-2b Bridge Out sign is a California MUTCD road closure sign. It is shown here as an educational reference with the official FHWA Standard Highway Signs layout and California sizing guidance.
The R11-3 Road Closed - Local Traffic Only sign is a California MUTCD road closure sign. It is shown here as an educational reference with the official FHWA Standard Highway Signs layout and California sizing guidance.
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.
Need R11 Series signs for a California project?
Public Ready can help you source, rent, or purchase R11 Series signs and integrate them into a compliant traffic control plan. For work zone compliance support, visit WorkZoneCompliance.com.