Stop Signs - R1-1
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Sign Specifications
MUTCD Code
R1-1
Sign Type
Regulatory Sign
Shape
Octagon
Exclusive to STOP signs
Colors
Red background
White legend
Compliance
MUTCD Compliant: Regulatory sign per MUTCD Section 2B.04.
| Size | Dimensions | Application |
|---|---|---|
| StandardDefault | 30x30" | Conventional roads |
| Multi-Lane | 36x36" | Multi-lane roads |
| Oversized | 48x48" | 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 on the right-hand side of the approach, near the intersection.
MUTCD Reference: Section 2B.04
Often Paired With
Signs commonly installed together per MUTCD guidelines
