US Numbered Route Sign - M1-4
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Product Details
US Numbered Route Sign - M1-4
These official U.S. Route shield signs are precision-engineered traffic markers that meet all current DOT and MUTCD state and federal guidelines. Crafted with 3/8" prepunched holes for standard mounting, the signs feature high-intensity reflective materials designed for maximum visibility and durability. The classic white shield design with black route number represents a standardized marker that has been a crucial part of the American highway system since 1926. While the original signs included state names and varied in design, modern U.S. Route shields now feature a consistent, simplified aesthetic that provides clear navigation guidance for drivers across the country.
Sign Specifications
MUTCD Code
M1-4
Sign Type
Route Marker
Shape
Rectangle (Vertical)
Standard regulatory sign shape
Colors
White background
Black legend
Compliance
MUTCD Compliant: Route marker per Section 2D.11. Standard shield design for route identification.
| Size | Dimensions | Application |
|---|---|---|
| Standard (1-2 digits)Default | 36x36" | US numbered routes |
| Wide (3 digits) | 45x36" | 3-digit US routes |
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 on sign assembly with route number. Interstate: blue shield. US Route: white shield. State: varies.
MUTCD Reference: Section 2D.11
Often Paired With
Signs commonly installed together per MUTCD guidelines
