MUTCD 11th Edition (2023)
Section 6H.11 — SLOW TRAFFIC AHEAD Sign (W23-1)
Manual on Uniform Traffic Control Devices, Section 6H.11. Standards, guidance, options and support statements, with figures and cross-references.
Section 6H.11 SLOW TRAFFIC AHEAD Sign (W23-1) Option: 01 The SLOW TRAFFIC AHEAD (W23-1) sign (see Figure 6H-1) may be used on a shadow vehicle, usually mounted on the rear of the most upstream shadow vehicle, along with other appropriate signs for mobile operations to warn of slow moving work vehicles. A ROAD WORK (W20-1) sign may also be used with the SLOW TRAFFIC AHEAD sign.MUTCD 11th Edition Page 805 December 2023Sect. 6H.12 to 6H.18
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