Gravel Sign - W7-4E
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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
Gravel Sign - W7-4E
Constructed from durable aluminum, this W7-4E Gravel Sign offers superior visibility and long-lasting performance in challenging outdoor environments. The sign comes standard with punched blanks for straightforward installation and is available in high intensity or diamond grade reflective materials to ensure maximum visibility during day and night conditions. Fully compliant with DOT and MUTCD state and federal standards, this sign provides critical safety communication for gravel road areas. The reflective surface effectively catches the attention of drivers and pedestrians, creating an essential warning marker that can be clearly seen from a distance under various lighting and weather conditions.
Technical Specifications
- Model: W7-4E - Material: Aluminum - Reflective Options: High Intensity, Diamond Grade - Mounting: Pre-punched blanks - Compliance: DOT and MUTCD Standards
Sign Specifications
MUTCD Code
W7-4E
Sign Type
Warning Sign
Shape
Diamond
Standard warning sign shape
Colors
Yellow background
Black legend
Compliance
MUTCD Compliant: This hill warning sign meets federal standards per MUTCD Section 2C.26. Used to warn of steep grades ahead.
| 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 at top of grade for downhill warning, or in advance for uphill notification. Required when grade exceeds: 5% for 3000ft, 6% for 2000ft, 7% for 1000ft, 8% for 750ft, 9% for 500ft.
MUTCD Reference: Section 2C.26