The three Chinese notices correspond to the same HS code 853080, but each one regulates a different element of the road signaling system.

We detail each of the notifications:

G/TBT/N/CHN/2142 – Road traffic signal controller

• Regulated object: electronic traffic signal controllers (equipment that manages cycles and times).
• Technical scope: classification, model designation, technical requirements, test methods, inspection, marking, labeling and packaging.
• Scope of application: design, production and inspection of controllers; also includes devices used in other environments by reference.
• Stated objective: protection of human health or safety.
• Notified document (CH): https://members.wto.org/crnattachments/2025/TBT/CHN/25_07828_00_x.pdf

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G/TBT/N/CHN/2140 – Road traffic signal lamps

• Regulated object: illuminated traffic signals / optical units (traffic lights, fixed and circumstantial).
• Technical scope: classification, modeling, requirements, test methods, inspection, nameplates, packaging, transportation and storage.
• Scope of application: design, manufacture and inspection of illuminated road signs.
• Stated purpose: prevention of deceptive practices, consumer protection and protection of human health or safety.
• Notified document (CH): https://members.wto.org/crnattachments/2025/TBT/CHN/25_07826_00_x.pdf

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G/TBT/N/CHN/2141 – Safety technical requirements for road traffic signal setting and installation

• Regulated object: installation and placement of traffic signs.
• Technical scope: general safety requirements, installation conditions, combined application, display requirements and transition period.
• Scope: physical implementation and installation of traffic signs on the road.
• Stated objective: protection of human health or safety.
• Notified document (CH): https://members.wto.org/crnattachments/2025/TBT/CHN/25_07827_00_x.pdf