MUTCD Regulatory Sign: No Turn On Red Except From Left Lane
Federal Highway Administration - MUTCD
Modified R10-11c from figure 2B-27 <a rel="nofollow" class="external free" href="https://mutcd.fhwa.dot.gov/pdfs/2009r1r2/mutcd2009r1r2edition.pdf">https://mutcd.fhwa.dot.gov/pdfs/2009r1r2/mutcd2009r1r2edition.pdf</a>