company news about An Indian Smart Traffic Project’s High Standards for Lens-Type LEDs

Rajesh, a government road-project contractor from Pune, India, was responsible for sourcing LED light sources for a large-scale smart traffic signal system.

For this project, reliability and visibility were not optional — they were mandatory.

In his very first email to Lanjin Lighting, he stated clearly:

“We need LEDs suitable for long-distance visibility.
The ones we tested are too dim.”

Rajesh shared a detailed list of technical requirements for the traffic signal LEDs:

1. Visibility distance over 150 meters
2. Strong penetration in foggy and rainy conditions
3. No color deviation allowed
4. Consistent brightness across every batch
5. Service life ≥ 50,000 hours

He also explained why he was looking for a new supplier.

The lens-type LEDs he previously purchased from other vendors had caused serious issues:

1. Emission angles were too wide, making signals unclear at long distances
2. Color inconsistency between different batches
3. Yellow LEDs appeared greenish
4. Red LEDs were dim and weak
5. Rapid lumen depreciation under high-temperature conditions

For traffic projects involving public safety, these problems were completely unacceptable.

Lanjin’s Engineering-Level Analysis

Instead of offering a generic product, the Lanjin LED engineering team analyzed the structure of the traffic signal housing and real road-use scenarios.

Based on this analysis, we proposed a complete, application-specific solution.

Recommended Lanjin LED Products

1. 1206 LEDs with Lens (Red / Yellow / Green)
2. 3030 LEDs with Lens, optimized for fog-penetration scenarios
3. Narrow beam angle: 30°–60° for long-distance visibility
4. Single-BIN control to eliminate color variation

To support our recommendation, Lanjin Lighting provided full technical validation materials:

1. LM-80 lifetime reports
2. Lumen maintenance curves at 85°C high-temperature testing
3. Real photos taken inside a fog chamber
4. Penetration comparison tests between lens-type LEDs and standard flat LEDs

When Rajesh watched the fog-simulation test video, he was so impressed that he sent us a voice message immediately:

“This is exactly the visibility we need for our highways!”

Rajesh’s government project officially adopted Lanjin lens-type LEDs across the entire system.

In the first phase alone, the order quantity reached 1.2 million pcs.

Today, the traffic system has been operating for over three years, with:

1. No large-scale quality complaints
2. Stable brightness output
3. Excellent color consistency
4. Proven durability in extreme weather conditions

Traffic signal projects demand far more than just LED components. They require:

1. Strict consistency control
2. Proven performance in extreme weather
3. Long-term reliability and stability
4. Deep understanding of beam angle, brightness, and optical design

Rajesh chose to continue working with Lanjin not because of price, but because Lanjin LED delivers complete, engineering-grade solutions — not just products.