MUTCD 11th Edition (2023)
Section 2D.21 — TO Auxiliary Plaque (M4-5P)
Manual on Uniform Traffic Control Devices, Section 2D.21. Standards, guidance, options and support statements, with figures and cross-references.
Section 2D.21 TO Auxiliary Plaque (M4-5P) Option: 01 The TO (M4-5P) auxiliary plaque (see Figure 2D-5 ) may be used to provide directional guidance to a particular road facility from other highways in the vicinity (see Section 2D.34).Standard: 02 If used, the TO auxiliary plaque shall be mounted directly above a route sign or an auxiliary plaque for an alternative route. If a Cardinal Direction auxiliary plaque is also included in the assembly, the TO auxiliary plaque shall be mounted directly above the Cardinal Direction auxiliary plaque.
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