1 Scope
This Standard specifies the requirements (including material requirements and pasting requirements), test methods, inspection rules, packaging, labelling and storage for retro-reflective markings of carriage.
This Standard applies to trucks and trailers; it does not apply to vehicles for road transportation of explosive products and highly toxic chemical products.
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 Standard; 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 2423.17 Basic environmental testing procedures for electric and electronic products. Test ka: salt mist(GB/T 2423.17-2008 IEC 60068-2-11-1981 Basic environmental testing procedures. Part 2 : Tests. Test Ka: Salt mist, IDT);
GB/T 3681 Plastics C Test methods of exposure to weathering (GB/T 3681-2000. neq ISO 877:1994);
GB/T 3730.1 Motor vehicles and trailers C Types C Terms and definitions;
GB/T 3978 Standard illuminants and illuminating-viewing conditions;
GB/T 3979 Methods of measuring the colour of materials;
GB/T 4785 Installation requirements for external lighting and light signalling devices for motor vehicles and their trailers;
GB/T 11564 Retro-reflector for motor vehicles;
GB/T 18833-2002 Retro-reflective sheeting for road traffic signs.
3Terms and definitions
The terms and definitions set out in GB/T 3730.1, GB/T 11564 and GB/T 18833-2002 and below apply to this Standard.
3.1 Retro-reflective markings of carriage
The combination of retro-reflective materials installed or pasted onto vehicle carriages for the purpose of increasing the identification of the vehicle.
3.2 Luminance factor
Under the circumstances of the same illumination and viewing, the ratio between the luminance of the sample and the luminance of the perfect reflecting diffuser.
