Ramp Meter Ahead Sign - W3-7
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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
Ramp Meter Ahead Sign - W3-7
Highway safety begins with clear, strategic communication, and this Ramp Meter Ahead Sign (W3-7) delivers crucial traffic information precisely where drivers need it most. Constructed from high-quality reflective aluminum, the sign provides exceptional visibility during day and night driving conditions, ensuring motorists are prepared for upcoming ramp metering zones. Designed to meet strict DOT and MUTCD standards, this sign plays a critical role in reducing traffic congestion and potential accidents by alerting drivers to regulated highway entry points. The reflective material and standard punched blank configuration make it a versatile, reliable solution for transportation departments seeking to optimize traffic flow and enhance roadway safety.
Sign Specifications
MUTCD Code
W3-7
Sign Type
Warning Sign
Shape
Diamond
Standard warning sign shape
Colors
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.
| 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 traffic control device when visibility is limited. Placement distance per MUTCD Table 2C-4 based on approach speed.
MUTCD Reference: Section 2C.36
Often Paired With
Signs commonly installed together per MUTCD guidelines
