Shoulder Drop Off (plaque) Sign - W8-17P
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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
Shoulder Drop Off (plaque) Sign - W8-17P
This critical road safety sign alerts drivers to potentially dangerous shoulder conditions where sudden elevation changes pose a significant risk. Engineered to meet both DOT and MUTCD state and federal guidelines, the sign features high-intensity reflective sheeting mounted on durable aluminum with radius corners and 3/8" prepunched mounting holes. Specifically designed for locations where an unprotected shoulder drop-off adjacent to the travel lane exceeds 3 inches in depth over a continuous roadway length, this supplemental plaque (W8-17P) provides essential warning information to motorists. When mounted below the standard shoulder drop-off warning sign (W8-17), it enhances driver awareness and helps prevent potential vehicle accidents.
Sign Specifications
MUTCD Code
W8-17P
Sign Type
Warning Sign
Shape
Diamond
Standard warning sign shape
Colors
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.
| 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
Install in advance of surface condition hazard. Placement distance based on approach speed and stopping sight distance.
MUTCD Reference: Section 2C.27
Often Paired With
Signs commonly installed together per MUTCD guidelines
