Info: S-11 (L) / S-11 (R) opposite arrow MUTCD: R3-2 (R3-1 opposite) 24” x 24” DOT standard “No Left Right” sign. Use to prohibit turning traffic. Post and panel mount. DESIGNER’S NOTE: Per MUTCD section 2B.18-11, ‘where on way signs are used, no left turn and no right turn signs may be omitted. In most cases, this sign is not necessary, since one way signs are used to depict the flow of traffic.