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Why Do LED Street Lights Flicker? Causes, Solutions, and How to Avoid the Problem

May. 15, 2025

LED street lights are a cornerstone of modern urban lighting, offering energy efficiency, longevity, and superior brightness. However, flickering remains a common concern for buyers and municipalities. This article explores the root causes of LED street light flicker, actionable solutions, and how partnering with a trusted manufacturer like BMT Lighting (Philips Lighting Supplier) ensures flicker-free performance.


Understanding LED Street Light Flicker

Flicker refers to rapid, repeated changes in light intensity. While human eyes typically perceive flicker at frequencies below 70Hz, even imperceptible flicker can cause eye strain, headaches, and reduced visibility. For LED street lights, flickering often signals technical flaws or environmental challenges.

Why Do LED Street Lights Flicker? Causes, Solutions, and How to Avoid the Problem

PHILIPS Solar Street BRP216 G2


Key Causes of LED Street Light Flicker

1. Driver Power Supply Issues

LED drivers regulate voltage and current to ensure stable operation. Poor-quality or incompatible drivers can fail to maintain constant current, especially under fluctuating grid voltages. This leads to flickering as the driver struggles to adapt.

Solution:

2. LED Chip and Circuit Mismatch

Mismatched LED chips and drivers destabilize current flow. For example, high-current drivers paired with low-wattage chips cause overheating and flicker.

Solution:

3. Poor Waterproofing

Water ingress corrodes internal components, destabilizing circuits and causing intermittent flicker. This is common in low-cost fixtures with substandard IP ratings.

Solution:

4. Loose Wiring or Faulty Connections

Loose connections create resistance, leading to voltage drops and flicker. This often occurs during improper installation.

Solution:

5. Incompatible Dimming Systems

Non-dimmable LEDs paired with dimming circuits flicker due to incompatible control signals.

Solution:


Why Buyers Should Prioritize Flicker-Free Solutions

  1. Safety: Flickering lights reduce visibility, increasing accident risks.

  2. Longevity: Unstable current shortens LED lifespan, raising maintenance costs.

  3. Energy Efficiency: Flicker often correlates with power waste due to inefficient drivers.


How BMT Lighting (Philips Authorized Distributor) Ensures Reliability

As a certified Philips distributor, BMT Lighting provides:

1. Philips-Certified Quality

2. Rigorous Testing

All products undergo:

3. Custom Solutions

4. Warranty and Support


Key Questions Buyers Should Ask Suppliers

  1. Are your drivers certified for constant-current output?

  2. What IP rating do your fixtures have?

  3. Do you provide compatibility testing reports?

  4. What is the warranty period for chips and drivers?


About BMT Lighting:
As a Philips-authorized distributor since 2013, BMT Lighting specializes in OEM/ODM services for solar and smart LED street lights. Our Philips-certified products are trusted in 50+ countries for municipal, commercial, and residential projects

Why Do LED Street Lights Flicker? Causes, Solutions, and How to Avoid the Problem

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