GAOQIAO is a Chinese LED traffic light manufacturer with 17+ years of experience designing, producing and exporting LED signal heads for road intersections worldwide. Our LED traffic light product line covers the full diameter range from 100mm compact signals through 500mm highway-class signal heads, in 1-aspect, 2-aspect, 3-aspect and 4-aspect configurations. Every product is engineered for road-safety applications, certified to international standards (CE, RoHS, FCC, IP65, EN 12368) and supported by GAOQIAO's full vertical integration — from optical design and LED module production to housing, controller and pole manufacturing under one roof.
GAOQIAO LED traffic lights are organized by diameter and aspect count. The right combination depends on the road type, viewing distance, intersection geometry and applicable local standard. Browse the dedicated sub-catalogs below for full specifications and product photos, or contact our engineering team for project-specific guidance.
| Diameter | Imperial | Typical Viewing Distance | Primary Application | Sub-catalog |
|---|---|---|---|---|
| 100mm | 4-inch | Up to 50m | Compact and access-control | 100mm line |
| 200mm | 8-inch | 50-150m | Residential and short-range | 200mm line |
| 300mm | 12-inch | 150-300m | Mainstream intersection | 300mm line |
| 400-500mm | 16-20-inch | 300m+ | Highway and high-speed | 400-500mm line |
A single-direction signal head with one LED array. Used for pedestrian signals (walk/don't walk), lane control signals, reversible lane indicators and special-purpose indicators such as ramp meters. Browse 1-aspect products.
Two-direction signal head, typically red+green or red+yellow. Used for compact intersections, ramp control and pedestrian crossings. Browse 2-aspect products.
The industry-standard red/yellow/green vehicle signal. Used in the majority of urban and suburban intersections worldwide. Browse 3-aspect products.
Red/yellow/green plus a turn arrow (left, right or both). Used at intersections with protected turn phases. The arrow can be a separate aspect or a shared lamp module with arrow overlay. Browse 4-aspect products.
For a complete B2B procurement guide, read our OEM vs ODM manufacturing guide and our traffic light size selection guide.
GAOQIAO supplies the full set of components for a traffic-controlled intersection, all from one factory:
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GAOQIAO manufactures LED traffic lights in four standard diameters: 100mm (4-inch), 200mm (8-inch), 300mm (12-inch) and 400-500mm (16-20-inch). The 300mm 12-inch line is the most exported size, used in standard urban and suburban intersections. Larger diameters are reserved for highways and high-speed arterials.
GAOQIAO signal heads are available in 1-aspect, 2-aspect, 3-aspect and 4-aspect configurations. A 1-aspect is a single indicator (e.g., red only or a pedestrian walk/don't walk). 3-aspect is the standard red-yellow-green vehicle signal. 4-aspect adds a turn arrow. Custom aspect counts and arrow directions are available for OEM projects.
Standard catalog items ship in 15-25 days from order confirmation. Custom OEM configurations with non-standard colors, logos or aspect counts typically ship in 30-45 days. Container-optimized packaging is included. For urgent project requirements, expedited production is available at additional cost.
Yes. GAOQIAO signal heads use industry-standard wiring and voltage (12-24 VDC or 110-220 VAC), making them compatible with virtually any major traffic signal controller. We also manufacture our own matching traffic light controller line for projects that want a single-source solution. Documentation including wiring diagrams is shipped with every order.
GAOQIAO LED traffic lights carry a 3-year warranty on the LED module and a 5-year warranty on the housing. The warranty covers manufacturing defects and premature LED failure under normal operating conditions. Extended warranty terms are available for OEM projects.
Lens size depends on the road class. For urban roads with speed limits under 60 km/h, 200 mm lenses with up to 140 LEDs per aspect are common. For arterial roads and highways above 60 km/h, 300 mm or 400 mm lenses are required to meet ITE and EN 12368 visibility distances. GAOQIAO project engineers can recommend the right configuration based on your intersection geometry, mounting height and approach speed.
GAOQIAO traffic light LED modules use high-flux 5 mm discrete LEDs from Osram or Nichia, rated for 100,000 hours of operation at 25 °C ambient. The integrated constant-current driver has surge protection up to 4 kV and an MTBF exceeding 200,000 hours. In typical intersection use (16 hours per day), this corresponds to more than 17 years of service before reaching 70% of initial luminous flux.
Yes. Our traffic lights are voltage-compatible with all major controller brands including Siemens, Swarco, Peek, Eagle, NTCIP, Econolite and Chinese-made controllers. Standard operating voltage is 110 V AC or 220 V AC at 50/60 Hz, with 12 V DC and 24 V DC variants available for low-voltage intersection cabinets. We provide the wiring harness, terminal blocks and pin-out diagram for each controller brand on request.
About GAOQIAO — Nanjing Gaoqiao Traffic Technology Co., Ltd. is a Chinese LED traffic light manufacturer with 17+ years of export experience. For international standards guidance, see the Institute of Transportation Engineers (ITE) and the EN 12368 traffic signal standard. View our about page for company background or certification page for the full compliance list.
This section summarizes the most common commercial and technical questions that importers, contractors and government procurement officers ask before issuing a purchase order for traffic light systems from GAOQIAO.
GAOQIAO products are designed to meet the most widely adopted international road, traffic and electrical safety standards. Our factory is audited annually by TÜV, SGS and BV.
For tender submissions, GAOQIAO provides pre-filled compliance matrices, type-test reports, photometric files, and CAD drawings within 3 working days of request.
GAOQIAO traffic light systems have been deployed in 60+ countries. The following are the most common deployment scenarios our project team encounters.
For each scenario, GAOQIAO can share anonymized case studies with photos, drawings, and measured performance data on request.
With proper preventive maintenance, the operational lifetime of a GAOQIAO traffic light typically exceeds 10 years. The following schedule reflects the experience of our field service team across more than 60 countries.
GAOQIAO offers annual maintenance contracts and on-site technician training for distributor networks. Spare-part kits for the first 3 years of operation are bundled with every shipment at no additional cost.
Last updated: 2026-06-29 — This page is reviewed weekly by the GAOQIAO team.
Questions about the latest specs or want a custom quote? Contact our engineering team.