Comparison of New and Old Standards - GB/T 43081-2023 vs GB/T 15766.1-2008

Detailed explanation of core changes

(1) Expansion of scope of application

The old standard GB/T 15766.1-2008 is applicable to light bulbs (filament bulbs and discharge bulbs) used as headlights, fog lights, and signal lights for road motor vehicles. The new standard expands its scope of application from "light bulbs" to "light bulbs and light sources", explicitly incorporating LED light sources as the mainstream technology route for road vehicle lighting. At the same time, through the adjustment of the standard name, it reflects the modernization upgrade of the terminology system - from "road motor vehicle light bulbs" to "road vehicle light bulbs and light sources", more accurately reflecting the product categories covered by the standard. This expansion enables the standard to better adapt to the diverse product types and technological advancements in the current market.

(2) Improvement of terminology system and testing methods

The new standard not only adds terms such as luminous flux maintenance rate and rated value of non replaceable light sources, but also introduces more comprehensive photoelectric evaluation indicators such as color temperature and color rendering index, improves the minimum luminous flux standard, strengthens anti-interference ability and other provisions, and provides scientific and operable detection methods for new light sources such as LED. These changes reflect the level of technological development in the industry and the growing demand from consumers for automotive lighting quality.

(3) Strengthening of safety and environmental protection requirements

The new standard strengthens the consideration of safety and environmental protection, sets lower energy consumption limits, and advocates the use of recyclable materials to manufacture light bulbs and accessories; Meanwhile, strict control measures have been implemented for products containing harmful substances such as mercury.

(4) Refinement of size specifications

In terms of size specifications, the new standard refines the specific size parameters of different types of lamps and proposes stricter or more flexible design guidelines for certain special application scenarios, such as defining more precise external size limits for specific models of light bulbs or light source components to ensure compatibility and interchangeability

The new standard provides a more scientific and unified technical basis for road vehicle lighting products by comprehensively regulating dimensions, photoelectric performance, and detection methods. Introduce durability indicators such as luminous flux maintenance rate to make the performance guarantee of products more systematic throughout their entire lifecycle; The addition of LED light source technology requirements enables standards to adapt to the latest trends in industry technology development, promoting a smooth transition of lighting products from traditional light sources to new types of light sources.

The abolition of GB/T 15766.1-2008 and the implementation of GB/T 43081-2023 mark an important upgrade in China's road vehicle light source standardization system. The new standard covers three major technical routes: filament bulbs, discharge bulbs, and LED light sources, forming a unified technical framework and laying the technical foundation for the industry to develop towards more specialization, standardization, and intelligence.