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  3. Gusty Winds Area Sign - W8-21

Gusty Winds Area Sign - W8-21

Gusty Winds Area Sign - W8-21
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
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Choose Your Reflectivity Grade

Compare visibility, durability, and ideal applications

Type I

Engineering Grade

Ideal Use

Parking lots

Brightness

Standard

General Lifespan

7 years

Night-time Visibility

500 feet away

Type IV

High Intensity Prismatic

Ideal Use

Roadways

Brightness

High

General Lifespan

10 years

Night-time Visibility

1000 feet away

Type IX

Diamond Grade

Ideal Use

High-speed roadways

Brightness

Maximum

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.

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

W8-21

Sign Type

Warning Sign

Shape

Diamond

Standard warning sign shape

Colors

ABC

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.

SizeDimensionsApplication
Minimum24x24"Low-volume roads
StandardDefault36x36"Conventional roads
Freeway48x48"Freeways
Compliance & Certifications

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

Recommended

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

Reference: MUTCD Section 2C.27

Often Paired With

Signs commonly installed together per MUTCD guidelines

Percent Grade (distance) KM Sign - W7-3DKM

W7-3DKM

Percent Grade (distance) KM Sign

% Grade Sign - W7-3

W7-3

% Grade Sign

Percent Grade (distance) Miles Sign - W7-3B

W7-3B

Percent Grade (distance) Miles Sign

Next (distance) Miles Sign - W7-3A

W7-3A

Next (distance) Miles Sign

Next Distance KM Sign  - W7-3KM

W7-3KM

Next Distance KM Sign

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