Gusty Winds Area Sign - W8-21
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Choose Your Reflectivity Grade
Compare visibility, durability, and ideal applications
Engineering Grade
Ideal Use
Parking lots
Brightness
General Lifespan
7 years
Night-time Visibility
500 feet away
High Intensity Prismatic
Ideal Use
Roadways
Brightness
General Lifespan
10 years
Night-time Visibility
1000 feet away
Diamond Grade
Ideal Use
High-speed roadways
Brightness
General Lifespan
10+ years
Night-time Visibility
1500 feet away
Product Details
Gusty Winds Area Sign - W8-21
Engineered for roadway safety, this Gusty Winds Area Sign (W8-21) provides critical warning to drivers about potential wind hazards. Designed to alert road users about sections of highway prone to strong wind gusts, the sign specifically cautions drivers of trucks, recreational vehicles, and high-profile vehicles about potential stability risks. Constructed with high-quality reflective sheeting on aluminum with radius corners, the sign meets all DOT and MUTCD state and federal guidelines. The 3/8" prepunched holes and high-intensity reflective material ensure maximum visibility and durability. When used in conjunction with an optional W7-3a supplemental plaque, the sign can indicate the specific length of roadway experiencing frequent wind gusts, enhancing driver awareness and safety.
Sign Specifications
MUTCD Code
W8-21
Sign Type
Warning Sign
Shape
Diamond
Standard warning sign shape
Colors
Yellow background
Black legend
Compliance
MUTCD Compliant: This pavement condition warning sign meets federal standards per MUTCD Section 2C.27. Used to warn of road surface hazards.
| Size | Dimensions | Application |
|---|---|---|
| Minimum | 24x24" | Low-volume roads |
| StandardDefault | 36x36" | Conventional roads |
| Freeway | 48x48" | Freeways |
MUTCD Compliant
Federal standards
DOT Approved
State & Federal
ASTM D4956
Type III/IV/XI
10+ Years
Durability
Engineer Grade (EG)
Type: ASTM Type I
Lifespan: 5-7 years
Brightness: ~50 cd/lux/m²
Parking lots, low-speed areas, non-critical signage
High Intensity Prismatic (HIP)
Type: ASTM Type III/IV
Lifespan: 10 years
Brightness: ~360 cd/lux/m²
Traffic signs, work zones, roadways
Diamond Grade (DG3)
Type: ASTM Type XI
Lifespan: 10-12 years
Brightness: ~580 cd/lux/m²
Critical signs, freeways, overhead signs
Install in advance of surface condition hazard. Placement distance based on approach speed and stopping sight distance.
MUTCD Reference: Section 2C.27
Often Paired With
Signs commonly installed together per MUTCD guidelines
