Small 320×320 Medium 640×640 Large 1024×1024 Download Tiff Original 3000×3000 | (323.9 KB) Description Keywords kservblwh Galleries Service Signs Source: Federal Highway Administration Manual on Uniform Traffic Control Devices for Streets and Highways, 2003 Edition (including 2004 and 2007 revisions) (Washington, DC: United States Department of Transportation, 2007)