Sign R11-3a “Street Closed – Local Traffic Only” from the Manual of Uniform Traffic Control Devices.
"Regulatory Signs, Barricades, and Gates" in   (19 December 2023)  Manual on Uniform Traffic Control Devices for Streets and Highways (11th ed.), Washington, D.C.:  Federal Highway Administration, p. 136 Retrieved on 19 December 2023.
Federal Highway Administration