MUTCD 11th Edition (2023)
Section 2N.06 — MAINTAIN TOP SAFE SPEED Sign (EM2-3)
Manual on Uniform Traffic Control Devices, Section 2N.06. Standards, guidance, options and support statements, with figures and cross-references.
Section 2N.06 MAINTAIN TOP SAFE SPEED Sign (EM2-3) Option: 01 The MAINTAIN TOP SAFE SPEED (EM2-3) sign (see Figure 2N-1) may be used on highways where conditions are such that it is prudent to evacuate or traverse an area as quickly as possible. 02 Where an existing Speed Limit (R2-1) sign is in a suitable location, the MAINTAIN TOP SAFE SPEED sign may be mounted directly over the face of the speed limit sign that it supersedes. Support: 03 Since any speed zoning would be impractical under such emergency conditions, no minimum speed limit can be prescribed by the MAINTAIN TOP SAFE SPEED sign…
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