GB14778-2025
General rules of coloured light for safety
安全色光通用规则
GB 14778-2025 is a current mandatory Chinese national standard for General rules of coloured light for safety. It appears in the Food compliance cluster with a product safety focus and has an implementation date of May 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard specifies the general rules for coloured light for safety and is applicable to production, business units, and public places. It is strictly mandatory for all manufacturers and facilities producing or utilizing safety lighting within the specified domains. However, it does not apply to aviation, marine, inland waterway navigation lights, or reflected light. It serves as a crucial compliance reference for traffic signals, emergency stop buttons, and fire equipment indicators.
Technical requirements
The standard defines the representation matters and usage scenarios for four primary safety colours—red, yellow, green, and blue—along with white as an auxiliary light. Red light indicates prohibition, danger, or fire equipment; yellow light serves as a warning to attract attention; green light indicates safety, permission, or emergency evacuation; and blue light is used for mandatory instructions. Furthermore, the standard establishes the chromaticity area ranges for these safety lights to ensure they are clearly recognizable at designed distances. Manufacturers must ensure their light sources comply with the specific boundary equations and intersection coordinates defined in the standard's appendix. It also references GB 2894 for safety colours and signs to maintain consistency. Regarding practical application, the standard outlines usage requirements considering environmental brightness and surrounding colours. Engineers must evaluate installation position, surrounding environment, manufacturing materials, and maintenance to ensure the safety light remains distinctly visible.
Testing methods
The evaluation of safety lights under this standard involves verifying their chromaticity coordinates against the defined boundary equations. The standard utilizes the CIE 2° standard colorimetric observer system to map out the exact color boundaries. Compliance testing requires measuring the light's chromaticity to ensure it falls within the designated coordinate intersections for its respective color category.
FAQs
What products and facilities are regulated under GB 14778-2025?
It applies to coloured safety lights used by production and business units and in public places. It does not apply to aviation, marine, inland waterway navigation lights, or reflected light.
Are there any significant updates from the previous GB/T 14778-2008 version?
The main update is the addition of a normative reference to GB 2894 (Safety colours and safety signs) within the chapter on chromaticity area ranges, ensuring better alignment with general safety sign standards.
How does GB 14778-2025 define the color boundaries for safety lights?
The standard defines specific chromaticity boundaries and intersection coordinates for red, yellow, green, blue, and white lights based on the CIE 2° standard colorimetric observer. Engineers must ensure their light sources fall within these defined coordinate regions.
The summary above provides a high-level overview of GB 14778-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 14778-2025 today to access all detailed parameters, boundary equations, and testing procedures.
Applicability hints
- Type
- Foundational
- CCS
- C65
- ICS
- 13.100
- Competent department
- Ministry of Emergency Management
- Technical committee
- National Technical Committee on Work Safety of Standardization Administration of China
Relationships
Replaces:GB/T 14778-2008