This standard sets the requirements, test methods and inspection rules for retro-reflectors for motor vehicles.
This standard applies to all types of retro-reflectors for motorcycles, motor vehicles and trailers.
2 Normative References
The provisions of the following documents become provisions of this standard after being referenced. For dated reference documents, all later amendments (excluding corrigenda) and versions do not apply to this Part; however, the parties to the agreement are encouraged to study whether the latest versions of these documents are applicable. For undated reference documents, the latest versions apply to this standard.
GB/T 3978 Standard Illuminants and Illuminating-viewing Conditions
GB 4785 Prescription for Installation of the External Lighting and Light-signalling Devices for Motor Vehicles and their Trailers
GB/T 10485 Road Vehicles - Lighting and Light-signalling Devices - Environmental Endurance
3 Terms and Definitions
For the purpose of this standard, the following term and definition applies.
3.1
Retro-reflection
When the direction of the reflected light is close to the direction of the incident light and the illumination angle changes within a large range, this specific performance can still be maintained.
