Replaceable LED Module vs Full Signal Head Replacement
Introduction
When a traffic signal head fails, you can replace just the LED module or the entire head. The choice affects cost, downtime and long-term reliability. This guide compares the two approaches.
Replaceable LED Module
A replaceable LED module is the LED board inside the head that produces the light. It can be swapped in 10-15 minutes with basic tools, leaving the housing, lens, visor and backplate in place. Cost is typically 30-40% of a full head replacement.
Use replaceable modules when: - The LED has failed but the housing, lens and visor are still good - You want to upgrade from older LED technology to newer LED technology without replacing the whole head - You need to minimise downtime (a module swap is faster than a head swap)
Full Signal Head Replacement
A full head replacement means swapping the entire head assembly: housing, lens, LED module, visor and backplate. Use full replacement when:
- The housing is damaged (cracked, corroded, water-damaged)
- The lens is faded, scratched or yellowed
- The visor is broken or missing
- The head is end-of-life (typically 15-20 years old)
GAOQIAO full heads ship as complete assemblies with all accessories.
Cost and Downtime Comparison
| Aspect | Module replacement | Full head replacement |
|---|---|---|
| Cost | 30-40% of full | 100% |
| Downtime | 15-30 minutes | 1-2 hours |
| Tools needed | Screwdriver, basic | Screwdriver, basic + lift for high mounts |
| Lifespan impact | Module only | Full new lifecycle |
Compatibility
Replaceable LED modules must match the housing's optical design. GAOQIAO modules are designed to drop into GAOQIAO housings from the same product family. For mixed-vintage retrofits, confirm the housing dimensions and electrical interface before ordering.
Featured Products
GAOQIAO supplies replaceable LED modules and complete signal heads in all standard diameters. See the traffic signal maintenance guide.
Conclusion
Replace the module if the housing is good. Replace the head if the housing is damaged or end-of-life. GAOQIAO supplies both options. Send us your failed head details (diameter, age, housing condition) for a recommendation.
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Frequently Asked Questions
How do I know if the housing is good?
Visually inspect for cracks, water stains inside the lens, rust around the door hinges, and yellowing or crazing of the lens. If any of these are present, replace the full head.
Can a new LED module go into an old housing?
Usually yes, if the housing dimensions match. GAOQIAO modules fit the same family of housings from any year. Cross-vintage compatibility is on a case-by-case basis.
How long does a replaceable LED module last?
50,000-100,000 hours of operation, which is roughly 10-20 years in typical intersection duty.
Relevant GAOQIAO products
These public GAOQIAO catalogue pages are related to the guide. Open them for the representative description, then confirm the latest drawing and configuration before ordering.
- Traffic signal controllersWired and solar controllers with 6, 22, 44 and 56 output options.
- LED traffic signal heads200mm, 300mm and 400mm signal heads with MUTCD, EN12368, GB14886 compliance.
- Signal polesVertical, signal arm and double-arm poles for any intersection geometry.
- Spare parts and accessoriesSpare LED modules, lenses, visors, surge arrestors and anchor bolts.