Road Narrows Sign - W5-1
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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
Road Narrows Sign - W5-1
Designed to alert drivers of narrowing road conditions, this road narrows sign is a critical safety tool for traffic management. Its high-visibility reflective surface ensures clear communication of potential road hazards, helping drivers anticipate and safely navigate changing lane configurations. Constructed from durable aluminum, the sign meets all DOT and MUTCD state and federal standards for road signage. The W5-1 design features high-intensity reflectivity, making it easily readable during day and night conditions. Available with standard punched blanks, this sign is engineered to withstand harsh environmental conditions while maintaining optimal visibility for years of reliable use.
Sign Specifications
MUTCD Code
W5-1
Sign Type
Warning Sign
Shape
Diamond
Standard warning sign shape
Colors
Yellow background
Black legend
Compliance
MUTCD Compliant: This road width warning sign meets federal standards per MUTCD Section 2C.23. Used to warn of narrow roads or bridges.
| Size | Dimensions | Application |
|---|---|---|
| Minimum | 30x30" | Low-volume roads |
| StandardDefault | 36x36" | Conventional roads |
| Expressway | 48x48" | Expressways and 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 narrow roadway section. Placement distance based on approach speed.
MUTCD Reference: Section 2C.23
Often Paired With
Signs commonly installed together per MUTCD guidelines
