Speed Advisory Warning Sign - W13-1
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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
Speed Advisory Warning Sign - W13-1
Speed advisory warning signs play a critical role in promoting road safety by alerting drivers to potential hazards and recommended speed limits. These signs effectively communicate important traffic information, helping motorists adjust their driving behavior to navigate challenging road conditions more safely. Constructed with high-quality reflective aluminum, these signs provide maximum visibility during both day and night driving conditions. The W13-1 model meets all DOT and MUTCD standards, ensuring compliance with state and federal regulations. Available in high intensity and diamond grade reflective options, these signs are designed to be durable and long-lasting, providing clear and immediate guidance to drivers approaching speed-restricted areas.
Sign Specifications
MUTCD Code
W13-1
Sign Type
Warning Sign
Shape
Diamond
Standard warning sign shape
Colors
Yellow background
Black legend
Compliance
MUTCD Compliant: This advisory speed sign meets federal standards per MUTCD Section 2C.08. Used to indicate recommended safe speed for conditions.
| Size | Dimensions | Application |
|---|---|---|
| StandardDefault | 18x18" | Conventional roads |
| Expressway | 24x24" | Expressways |
| Freeway | 30x30" | 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
Mount directly below primary warning sign. Advisory speed must be multiple of 5 mph, determined by engineering study.
MUTCD Reference: Section 2C.08