BS EN 1463-1:2021 pdf free download – Road marking materials一Retroreflecting road studs Part 1: Initial performance requirements.
Chromaticity co-ordinates (x,y) shall be measured according to Annex B.
5.2 Durability of retro-reflectivity
The assessment of durability of retro-reflectivity shall be carried out by measuring the coefficient of luminous intensity (R) in accordance with EN 1463-2:2021 at an observation angle of 0,3u and an entrance angle of j50
6 Assessment and verification of constancy of performance — AVCP
6.1 General
The technical details necessary for the implementation of the system of assessment and verification of constancy of performance comprise provisions with regards to:
— the assessment of the construction product, which may be carried out on the basis of testing (including sampling); and
— the applicable factory production control.
6.2 Assessment of performance
6.2.1 General
When the intention is to declare any performance related to characteristics included in Annex ZA of this document this shall be carried out on the basis of testing (including sampling), in accordance with Clause 4 CharacteristicsN.
Assessment previously performed in accordance with the provisions of this standard, may be considered, provided that this assessment was performed to the same or a more rigorous assessment method, under the same AVCP system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question.
For the purposes of assessment, the products may be grouped into families, where it is considered that the results for one or more characteristics from any one product within the family are representative for that same characteristic-for all products within that same family.
NOTE Products may be grouped into different families for different characteristics.
In addition, the determination of the product performance shall be
— carried out for all characteristics included in the standard for which it is intended to declare the performance:
— on first application of this document, or
— at the beginning of the production of a new or modified retroreflecting road stud, unless a member of the same product family; or
— at the beginning of a new or modified method of production, where the modification may affect the stated properties;
— repeated for the characteristic(s) in question, whenever a change occurs in the retroreflecting road stud design, in the raw material(s) or in the supplier of the components, and/or in the method of production (subject to the definition of a family), which may affect significantly the performance in relation to one or more of the characteristics.
Where kit components are used whose performance in relation to their characteristics has already been determined on the basis of assessment methods of other harmonized technical specifications and those components bear CE marking in accordance with those harmonized technical specifications, these performances do not need to be re-assessed, if the intended use and the assessment methods of this standard correspond to previously used. The specifications of these components shall be documented.
6.2.2 Test samples, testing and compliance criteria
Samples of retroreflecting road studs to be tested/assessed shall be in accordance with Table 5.