Type 3 Object Markers - OM3-C
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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
Type 3 Object Markers - OM3-C
Type 3 Object Markers (OM3-C) are essential safety devices designed to warn motorists of obstructions within the roadway. Constructed from high-quality .080 aluminum with standard 3/8" mounting holes and radius corners, these markers meet both DOT and MUTCD state and federal guidelines. Engineered for maximum visibility, the markers feature high-intensity and diamond-grade reflective surfaces that ensure clear identification during day and night conditions. When installed, the edge of the marker closest to the road user should align with the nearest edge of the obstruction. For guardrail and roadside appurtenances, the markers feature alternating black and retroreflective yellow stripes that slope downward at a 45-degree angle, directing traffic safely around potential hazards.
Sign Specifications
MUTCD Code
OM3-C
Sign Type
Object Marker
Shape
Diamond
Standard warning sign shape
Colors
Yellow background
Black legend
Compliance
MUTCD Compliant: Type 3 Object Marker per Section 2C.65. Marks roadside obstructions.
| Size | Dimensions | Application |
|---|---|---|
| StandardDefault | 12x36" | Roadside obstructions |
MUTCD Compliant
Federal standards
DOT Approved
State & Federal
ASTM D4956
Type III/IV/XI
10+ Years
Durability
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 roadside obstructions. OM3-L for left side, OM3-R for right side, OM3-C for both directions. Red/white reflective.
MUTCD Reference: Section 2C.65