Sign R2-H2b “Speed Limit 65 / Vehicles Over 4 Tons Empty” 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>, preserving text for editing.
Ohio Department of Transportation
2004-04-16
<cite class="book" style="font-style:normal">"<a rel="nofollow" class="external text" href="http://www.dot.state.oh.us/Divisions/Engineering/Roadway/DesignStandards/traffic/SDMM/Documents/Total_SDMM_file01_C_A_RL_TS_TOC_Gen_Reg_071720Rev_062420.pdf#page=45">Regulatory Signs</a>" in   (16 April 2004) <i> Sign Designs and Markings Manual</i> (PDF), Ohio Department of Transportation  <small></small></cite>