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LD Series

LD Series Traffic Signal Module – Bi-Modal Arrow

The LD Series 12″ Bi-Modal Arrow is a high-performance LED traffic signal module engineered for reliable operation, exceptional visibility, and long service life. Designed to operate in either Yellow→Yellow or Yellow→Green configurations, it provides agencies with a flexible solution for diverse signal applications, including protected/permissive turns and flashing indications.

Built with LEOTEK’s proven optical and electrical technology, the LD Series maintains superior color uniformity, crisp arrow definition, and consistent luminance even after 100,000 hours of operation. Its robust design includes a hard-coated, UV-stabilized polycarbonate lens, complete O-ring sealing for moisture resistance, and a built-in Constant Current Source (CCS) that ensures uniform output across all LEDs. With a fail-state impedance design and multiple wiring options, the LD Series supports safe, reliable integration into new or retrofit signal systems.

Ideal for municipalities and DOTs seeking long-term performance, extremely low maintenance, and industry-leading warranty support.

Features

  • Two operating modes: Yellow→Yellow or Yellow→Green
  • High visibility LED arrow with exceptional uniformity and readability
  • Fail-State Impedance design enhances operational safety
  • Low energy consumption with significant maintenance savings
  • Durable construction:
    – Hard-coated, UV-stabilized polycarbonate lens
    – Full O-ring sealing for moisture & dust protection
  • Constant Current Source (CCS) ensures consistent light output
  • Long-life performance: Maintains 70% lumen output after 100,000 hours
  • Multiple connection options for flexible field installation
  • Virtually maintenance-free with industry-leading warranty
  • Available in 12″ arrow configuration, horizontally or vertically oriented

Specifications

Color
Yellow, Yellow & Green
Indication
Arrow
Lens Color
Clear
Lens Size
12"
Voltage
120Vac (80-135Vac)

Resources

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LD Series Bi-Modal Arrow

pdf

LD Series 12'' Yellow Green & Yellow Yellow Arrows Traffic Signal Spec Sheet

Size: 212.89 KB
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Date added: 28-11-2025
Date modified: 28-12-2025
pdf

IL LD MF Series Ttype Arrows Installation Guide

Size: 427.40 KB
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Date added: 28-11-2025
Date modified: 28-12-2025

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