This document specifies the measurement principles, instruments and equipment, measurement conditions, measurement steps, data processing, and test reports of the electric and photometric parameters, total flux, and chromaticity coordinates of filament light sources for power-driven vehicles. This document is applicable to filament light sources used for power-driven vehicle road lighting and light signal devices and systems (hereinafter referred to as the “light sources”). Filament light sources used for other road vehicles may take this as a reference.
Basic Data
Standard ID
GB/T 45321-2025 (GB/T45321-2025)
Description (Translated English)
Measuring method for electric and photometric parameters of filament light sources for power-driven vehicles
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
T38
Classification of International Standard
43.040.20
Word Count Estimation
22,267
Date of Issue
2025-02-28
Date of Implementation
2025-09-01
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
