Ramp Metered When Flashing Sign - W3-8
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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 Metered When Flashing Sign - W3-8
This high-visibility road sign provides critical guidance for drivers navigating metered highway entrance ramps. Constructed with durable aluminum blanks and premium reflective materials, the sign meets all DOT and MUTCD standards for the W3-8 design specification. Designed to enhance traffic flow and safety, the sign clearly communicates when ramp metering is in effect, helping drivers understand and respond to changing road conditions. By promoting smoother traffic patterns and reducing potential congestion, this essential traffic sign supports more efficient transportation infrastructure.
Sign Specifications
MUTCD Code
W3-8
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
