(Buggy symbol) Using Roadway Ahead sign W11-H14a from the <i><a href="https://en.wikipedia.org/wiki/Manual_on_Uniform_Traffic_Control_Devices" class="extiw" title="w:Manual on Uniform Traffic Control Devices">Ohio Manual of Uniform Traffic Control Devices</a></i>, with text converted to paths for display.
Ohio Department of Transportation
<a rel="nofollow" class="external text" href="http://www.dot.state.oh.us/Divisions/Engineering/Roadway/DesignStandards/traffic/SDMM/Documents/SDMM_Chapter03_Warning_071720_051920.pdf#page=341">Sign Designs &amp; Markings Manual</a>