Road Closed To Thru Traffic Sign - R11-4
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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
Road Closed To Thru Traffic Sign - R11-4
This Road Closed To Thru Traffic Sign (R11-4) provides critical safety information for motorists by clearly indicating restricted roadway access. Constructed from reflective aluminum standard punched blanks, the sign delivers exceptional visibility in diverse lighting conditions and environmental settings. Engineered to meet DOT and MUTCD state and federal standards, this sign ensures regulatory compliance while effectively communicating road closure information to drivers. The durable design allows the sign to withstand outdoor elements, maintaining its structural integrity and reflective properties over extended periods of use.
Sign Specifications
MUTCD Code
R11-4
Sign Type
Regulatory Sign
Shape
Rectangle (Vertical)
Standard regulatory sign shape
Colors
White background
Black legend
Compliance
MUTCD Compliant: Road closed sign per MUTCD Section 2B.42.
| Size | Dimensions | Application |
|---|---|---|
| StandardDefault | 18x24" | Conventional |
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 or in advance of road closure point.
MUTCD Reference: Section 2B.42
Often Paired With
Signs commonly installed together per MUTCD guidelines
