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© 2026 TrafficSigns.com — A division of Traffic Sign Corporation

1-877-936-9998service@trafficsigns.com
  1. Home
  2. Regulatory Signs
  3. Left Lane Light Rail Transit Only Sign - R15-4b

Left Lane Light Rail Transit Only Sign - R15-4b

Left Lane Light Rail Transit Only Sign - R15-4b
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
Total:$0.00

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Choose Your Reflectivity Grade

Compare visibility, durability, and ideal applications

Type I

Engineering Grade

Ideal Use

Parking lots

Brightness

Standard

General Lifespan

7 years

Night-time Visibility

500 feet away

Type IV

High Intensity Prismatic

Ideal Use

Roadways

Brightness

High

General Lifespan

10 years

Night-time Visibility

1000 feet away

Type IX

Diamond Grade

Ideal Use

High-speed roadways

Brightness

Maximum

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.

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

R15-4B

Sign Type

Regulatory Sign

Shape

Rectangle (Vertical)

Standard regulatory sign shape

Colors

ABC

White background

Black legend

Compliance

MUTCD Compliant: Railroad crossing sign per MUTCD Section 8B.04.

SizeDimensionsApplication
StandardDefault18x24"Conventional
Compliance & Certifications

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

Recommended

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

Reference: MUTCD Section 8B.04

Often Paired With

Signs commonly installed together per MUTCD guidelines

Do Not Enter Sign - R5-1

R5-1

Do Not Enter Sign

Speed Limit Sign - R2-1

R2-1

Speed Limit Sign

Stop Signs - R1-1

R1-1

Stop Signs

4 Way Stop Sign - R1-3

R1-3

4 Way Stop Sign

One Way Right Sign - R6-1R

R6-1R

One Way Right Sign

Truck Speed Limit Sign - R2-2

R2-2

Truck Speed Limit Sign

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