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  1. Home
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  3. Speed Reduction Ahead Sign - W3-5

Speed Reduction Ahead Sign - W3-5

Speed Reduction Ahead Sign - W3-5
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
Total:$0.00

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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

Speed Reduction Ahead Sign - W3-5

This W3-5 Speed Reduction Ahead Sign is engineered to enhance road safety by alerting drivers to upcoming speed changes. Constructed with high-quality reflective material on durable aluminum standard punched blanks, the sign ensures maximum visibility in all weather conditions and lighting environments. Fully compliant with DOT and MUTCD state and federal standards, this professional-grade traffic sign provides critical guidance for motorists, helping to prevent potential accidents and promote smoother traffic flow. The reflective surface ensures that drivers can quickly recognize and respond to speed reduction warnings, even in low-visibility situations.

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

W3-5

Sign Type

Warning Sign

Shape

Diamond

Standard warning sign shape

Colors

ABC

Yellow background

Black legend

Compliance

MUTCD Compliant: This advance traffic control warning sign meets federal standards per MUTCD Section 2C.36. Used to warn of upcoming traffic control devices.

SizeDimensionsApplication
StandardDefault36x36"Conventional roads
Expressway48x48"Expressways and 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 traffic control device when visibility is limited. Placement distance per MUTCD Table 2C-4 based on approach speed.

MUTCD Reference: Section 2C.36

Reference: MUTCD Section 2C.36

Often Paired With

Signs commonly installed together per MUTCD guidelines

Speed Limit Sign - R2-1

R2-1

Speed Limit Sign

View All Warning Signs