Advisory Speed Limit - W13-1-O
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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
Advisory Speed Limit - W13-1-O
Navigate challenging roadways with confidence using this precision-engineered advisory speed limit sign. Crafted from durable aluminum with high-intensity diamond grade reflective material, the sign provides clear visual guidance for drivers in diverse lighting conditions and environmental settings. Compliant with DOT and MUTCD state and federal standards, the W13-1-O sign delivers critical speed recommendation information to help drivers anticipate and respond to road conditions. The reflective surface ensures maximum visibility, enhancing safety by alerting motorists to recommended speed limits for specific road sections and potentially reducing accident risks.
Sign Specifications
MUTCD Code
W13-1-O
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 |
|---|---|---|
| Conventional RoadDefault | 30×30" | Two-lane roads, residential areas |
| Multi-Lane | 36×36" | Multi-lane roads, higher speed limits |
| Expressway | 48×48" | Expressways, freeways, high-speed roads |
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
Often Paired With
Signs commonly installed together per MUTCD guidelines
