Left Lane Light Rail Transit Only Sign - R15-4b
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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
Left Lane Light Rail Transit Only Sign - R15-4b
This specialized road sign provides critical guidance for transportation infrastructure by clearly demarcating lanes exclusively for light rail transit vehicles. Designed to meet stringent DOT and MUTCD standards (R15-4b designation), the sign helps prevent traffic conflicts and enhance overall roadway safety. Constructed on standard aluminum blanks with reflective finish, the sign ensures high visibility in diverse weather and lighting conditions. The durable materials and precise engineering guarantee long-term performance, supporting efficient traffic management and clear communication for drivers navigating complex transit corridors.
Sign Specifications
MUTCD Code
R15-4B
Sign Type
Regulatory Sign
Shape
Rectangle (Vertical)
Standard regulatory sign shape
Colors
White background
Black legend
Compliance
MUTCD Compliant: Railroad crossing sign per MUTCD Section 8B.04.
| 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 all public highway-rail grade crossings.
MUTCD Reference: Section 8B.04