"Maintenance Crew Ahead, MUTCD Sign" (Part#: SKW21-4)
Warn motorists of maintenance crew operations ahead within temporary traffic control work zones with this official MUTCD-compliant W21-4 maintenance crew ahead warning sign.
• Pro Standard: Heavy-duty, rust-free .080" aluminum engineered specifically to meet DOT and MUTCD standards for roadways, expressways, and high-wind environments.
• Visibility: Genuine 3M™ Reflective options (10+ year outdoor life).
• Mounting: Pre-drilled holes for easy installation (Posts/hardware sold separately).
• King Shield: Optional laminate protects against graffiti and fading.
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