A traffic-light warranty sets out the supplier’s agreed coverage and remedies for specified defects, subject to its terms. Review which LED modules, drivers and housing components are covered, the duration, exclusions and claim procedure. Include warranty terms alongside maintenance, spares and replacement costs when assessing the intersection’s total cost of ownership.
Warranty periods at a glance
| Period | Typical meaning | What to check |
|---|---|---|
| 1 year | Basic workmanship and material defects | Whether LED modules are included |
| 2 years | Common industry standard | Coverage for driver and module |
| 5 years | Confirm any extended coverage and its conditions for the selected module in writing. | Degradation and luminous output terms |
1. Why warranty matters for traffic signals
Traffic signals often operate continuously in harsh weather. A failed indication can create a safety risk and emergency maintenance costs. Review the written warranty for the selected LED modules, drivers and sealing: check the coverage, exclusions, evidence required and remedy available for an eligible early failure.
2. What a warranty typically covers
Most traffic light warranties cover manufacturing defects in the LED modules, the driver or power supply, and the housing, for a stated period. A good warranty also states the luminous maintenance, meaning how much brightness the modules will retain over time, rather than only whether the light is on or off.
3. What is usually excluded
Confirm warranty exclusions in the supplier’s written terms. Ask how incorrect voltage or wiring, lightning or surge, impact, water entry through an unsealed cable entry and unauthorised modifications are treated. Check the installation and earthing requirements and keep the relevant records. Coverage and claim decisions depend on the agreed terms and evidence; exclusions should not be assumed identical across products.
4. LED module quality drives the warranty
The LED chip, driver and thermal design influence how long a signal maintains its required light output. Assess the selected model using test evidence, operating conditions and maintenance requirements. Compare the written warranty period, coverage and exclusions separately; warranty duration alone does not establish build quality or service life.
5. How warranty links to IP rating and materials
Review warranty terms together with the enclosure’s documented ingress protection, material and specified operating conditions. An IP54 rating alone does not prove that moisture will reach the modules, and a warranty duration is not a prediction of service life. Confirm coverage, exclusions and installation and maintenance obligations for the selected product.
6. Questions to ask the supplier
Ask how long the LED modules, driver and housing are each covered, whether luminous maintenance is defined, how a claim is processed, and whether the warranty applies at the destination voltage and climate. Get the terms in writing before ordering.
Relevant GAOQIAO products
Open these public catalogue pages for representative configurations, then confirm the warranty terms for your exact specification.
- 300 mm (12 inch) LED traffic lightsHigh-flux modules: confirm photometric suitability for the selected intersection
- 200 mm (8 inch) LED traffic lightsCompact heads: confirm suitability for the urban or pedestrian project
- 100 mm (4 inch) LED traffic lightsSmall-format signals: confirm the tunnel or special-application requirements