GB 4599-2024Road illumination devices and systems for motor vehicles (English PDF)

1 Scope

GB 4599-2024 is the Chinese national standard on road illumination devices and systems for motor vehicles, in the field of road vehicles engineering. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 29 September 2024 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 July 2025. Classification: ICS 43.040.20, CCS T38. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This document specifies the same type determination, overall requirements, light source requirements, light color requirements, photometric performance, photometric stability, test methods and inspection rules for road illumination devices and systems for motor vehicles. This document applies to the design, manufacture and acceptance of road illumination devices and systems such as passing beam, driving beam, front fog lamps, corner lamps, etc. used in M and N category vehicles.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.

GB 4785, Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers

GB/T 43081-2023, Lamps and light sources for road vehicles - Dimensional, electrical and luminous requirements

IEC 60825-1.2014, Safety of laser products - Part

3 Terms and definitions

For the purpose of this document, the following terms and definitions, as well as those given in GB 4785, apply.

3.1 road illumination device A unit or group of units used to illuminate the road and objects in the direction of the vehicle's advance to achieve one or more functions.

3.2 road illumination system A system - consisting of left and right side units or unit groups and a controller - used to illuminate the road and objects in the direction of the vehicle's advance.

3.3 lighting unit The light-emitting component of the system, which provides a light beam for one or more road lighting functions of the system.

3.4 installation unit An inseparable housing (lamp body) containing one or more lighting units.

3.5 neutral status The system is in use without any adaptive control signal input.

4 Determination of identical types

Devices that do not differ in the following main features are considered to be of the same type.

7 Light color requirements

The light color of the device and system shall be white, and the light color of the front fog lamp can also be selectively yellow. The chromaticity characteristics shall comply with the relevant provisions of GB 4785.

8 Light distribution performance

8.1 General requirements All light distribution performance tests required by this document shall be carried out in the coordinate system specified in Appendix B.

9 Light distribution stability of devices or systems (except corner lamps)

9.1 General According to the requirements of Appendix E, test the clean lamp, dirty lamp and changes in the vertical position of the cut-off line under the influence of heat. The test results shall meet the requirements of 9.2 ~ 9.4.

10 Devices or systems equipped with LED modules or laser light source modules (except corner lamps)...