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Por qué elegirnos
Nanjing Gaoqiao Traffic Technology Co., Ltd
NJGQ has 17 years history in traffic light design and making since 2006, we also have partnered with Siemens (China) since 2016.Our focus and advantages are: traffic light & traffic light controller, whether it is normal power or solar power, portable or mobile, normal or solar warning traffic light, all kinds of traffic signal board, as well as light poles
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Publicado: 2026-07-31 · Actualizado para planificación y compras
Certification marks are useful only when their scope matches the exact product and destination market. This checklist helps buyers organize the documents and questions needed before approving LED traffic signals.
1. Confirm the applicable standard and project authority
Begin with the tender, road authority specification and destination-market rules. EN 12368 may be relevant for certain European-oriented projects, while other projects may reference local standards, ITE practices or a purchaser鈥檚 own test plan. Record the required diameter, aspect count, optical performance, environmental class and test method.
2. Request a document pack, not a single certificate
| Documento | What it should identify | Buyer check |
|---|---|---|
| Declaration or certificate | Manufacturer, model family, scope and issue date | Does it cover the exact signal configuration? |
| Electrical datasheet | Voltage, current, power, connector and operating range | Does it match the controller and wiring diagram? |
| Environmental data | Ingress protection, temperature, humidity, UV or corrosion information | Is the rating suitable for the installation site? |
| Optical/test report | Photometric performance, colours, visibility and test conditions | Are the test conditions comparable to the project? |
| Registros de calidad | Inspection plan, sample approval, traceability and packing record | Can the delivered batch be traced and accepted? |
3. Understand common labels
CE is a market-conformity declaration for applicable European requirements, not a universal performance certificate. RoHS addresses restricted substances in applicable electrical and electronic equipment. IP ratings describe protection against ingress under defined test conditions; they do not automatically prove impact resistance, salt spray or long-term outdoor life. EN 12368 should be checked against the applicable signal type and project edition.
4. Verify the physical product
- Housing material, visor and mounting-hole pattern.
- Lens/optical face, colour sequence and arrow or pedestrian symbol.
- Gasket, cable gland, drainage and service access.
- Label, serial number and batch traceability.
- Packaging protection for the destination route.
5. Build acceptance into the purchase order
Write the acceptance criteria into the PO: approved drawing, sample or first-article inspection, electrical test, visual inspection, quantity tolerance, packing photos and document delivery. If the project uses a third-party inspection agency, define the inspection point before production starts.
See GAOQIAO鈥檚 EN 12368 guidance, certification resources y LED traffic signal range before requesting a quotation.
Preguntas frecuentes
Does CE mean the signal is approved for every road project?
No. CE relates to applicable European conformity requirements. The road authority can still require additional tests, documents or local approval.
Is IP65 enough for a coastal installation?
Not necessarily. Ask about corrosion protection, UV exposure, salt spray and the actual housing material in addition to ingress protection.
What should be printed on the product label?
At minimum, include model, rated voltage, manufacturer and traceability information required by the project. Confirm the label format before mass production.
Need a document checklist for a tender? Send the destination country, standard clause and model list.
Guías relacionadas: normas y certificación
Consulte estos recursos relacionados para su proyecto semafórico.
¡Siempre en tu camino, siempre protegiéndote! Fabricante líder de semáforos de China: NJGQ
Nuestros puntos fuertes y especialidades son los semáforos y controladores, con alimentación convencional o solar, portátiles o móviles, luces de advertencia convencionales o solares, todo tipo de paneles de señalización y postes.