Winding Road, Silhouette Small 141×320 Medium 282×640 Large 451×1024 Download TIFF Original 1322×3000 | (138.6 KB) Download EPS Vector 378.5 KB Description The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes. Keywords kadvissilho, zig zag road sign Galleries Advisory and Warning 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)