GB5920-2024
Light-signalling devices and systems for motor vehicles and their trailers
汽车和挂车光信号装置及系统
GB 5920-2024 is a current mandatory Chinese national standard for Light-signalling devices and systems for motor vehicles and their trailers. It appears in the Electronics compliance cluster with a labeling & classification focus and has an implementation date of Jul 1, 2025.
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 applies to the design, manufacturing, and acceptance of light-signalling devices and systems used in M, N, and O category motor vehicles and their trailers. It covers a comprehensive range of lamps including front/rear position lamps, stop lamps, direction-indicator lamps, reversing lamps, end-outline marker lamps, parking lamps, daytime running lamps, rear fog lamps, slow-moving vehicle lamps, and light-signalling projection units. It is mandatory for all new type approvals of these automotive lighting systems.
Technical requirements
The standard specifies comprehensive photometric and physical requirements for various light-signalling devices. It defines the minimum and maximum luminous intensity values along the reference axis and within specified photometric angle ranges for each lamp category. Manufacturers must ensure their products meet these exact intensity distribution grids to pass type approval. The standard also details requirements for variable luminous intensity controllers and their failure modes. It introduces specific general requirements for modern lighting technologies, including sequential turn-on behaviors for direction-indicator lamps and functional specifications for light-signalling projection functions. The standard also regulates the use of illuminated emblems on light-signalling devices, specifying that stop lamps, turn signals, and reversing lamps must not feature them. Compliance with these structural and operational design rules is critical for market access. Additionally, the standard outlines strict requirements for light sources, both replaceable and non-replaceable. Replaceable filament and LED sources must comply with UN R37 and UN R128 regulations. For non-replaceable light source modules, the design must prevent misoperation and ensure modules with different characteristics cannot be mechanically interchanged.
Testing methods
Testing must be conducted in a dark room with controlled environmental conditions (23°C±5°C, ≤80% humidity). The standard specifies the use of DC stabilized power supplies and Class 1 illuminance meters. Photometric performance must be measured at specific test voltages depending on the light source type and controller configuration. The standard also details unique testing procedures for sequential turn signals, light-signalling projection functions, and thermal resistance tests for rear fog lamps.
FAQs
What products are regulated under GB 5920-2024?
GB 5920-2024 is a mandatory national standard that applies to M, N, and O category vehicles. It regulates the design, manufacturing, and acceptance of various light-signalling devices such as front/rear position lamps, stop lamps, direction-indicator lamps, and light-signalling projection units.
Are there any updates from the previous version of GB 5920-2024?
The new version consolidates eight previous standards and introduces requirements for light-signalling projection functions, sequential turn indicators, and A2 category front position lamps. It also updates requirements for light sources and photometric performance limits. Manufacturers must transition to these new consolidated requirements to maintain compliance.
How does GB 5920-2024 differ from UN regulations?
GB 5920-2024 aligns closely with international regulations, referencing UN R37 and UN R128 for light source specifications. However, it includes unique Chinese market requirements such as specific rules for illuminated logos and light-signalling projection patterns. Engineers should review the specific photometric tables to ensure alignment.
The summary above provides a high-level overview of GB 5920-2024. 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 5920-2024 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- T38
- ICS
- 43.040.20
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- National Technical Committee on Automobiles of Standardization Administration of China
Relationships
Replaces:GB 5920-2019, GB 15235-2007, GB 11554-2008, GB 17509-2008, GB 18408-2015, GB 18409-2013, GB 18099-2013, GB 23255-2019