R11 Series — Road Closed Signs

The R11 Series provides the regulatory signs used to legally close a roadway to all or some traffic. ROAD CLOSED (R11-2), STREET CLOSED — LOCAL TRAFFIC ONLY (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.