Warning Signs — Reflective Traffic Warning Signs That Meet MUTCD Standards

Warning signs give drivers the split-second notice they need before a curve, a school zone, a pedestrian crossing, or a rough road ahead. The difference between a sign that gets noticed and one that doesn't often comes down to reflectivity — and that's exactly where we don't cut corners.

Every warning sign we produce at Municipal Supply & Sign Co. uses 3M Scotchlite or Oralite retroreflective sheeting, applied to DOT Alodized Aluminum that's been treated to ASTM B 499 specifications. The result is a sign that performs in full Florida sun, reads clearly at night, and doesn't fade or chalk like baked enamel or plain vinyl alternatives.

We manufacture warning signs in-house at our Southwest Florida facility and ship nationwide. Whether you're sourcing a single school crossing sign or outfitting an entire construction corridor, we have the inventory and the expertise to get it right.

What We Carry

• Curve and turn warning signs — W1 series, available in standard and oversized configurations
• Intersection warning signs — W2 series including cross road, T-intersection, and Y-intersection
• School zone signs — S1-1, S4-3, and related school crossing warnings
• Pedestrian and bicycle crossing signs — W11-2, W11-15 series
• Construction and road work signs — W20 series, End Road Work, Flagman Ahead
• Speed reduction ahead signs — W3-5, for transitions exceeding 10 MPH drops
• Road condition signs — Rough Road, Bump, Dip, Slippery When Wet
• Animal crossing signs — Deer, horse, and wildlife warning configurations

Reflective Sheeting Options

• Engineer Grade (Type I) — standard visibility, suitable for low-speed roads
• High Intensity Prismatic (Type III) — improved nighttime visibility, most common for municipal use
• Diamond Grade (Type XI) — maximum retroreflectivity, required for high-speed and high-risk locations

Who Orders From Us

• County and city road departments needing compliant warning sign inventory
• Traffic engineering firms specifying signage for new road projects
• Construction companies sourcing temporary and permanent warning signs
• Property owners and private roads needing posted warnings for curves, crossings, or hazards