| Summary: | A certification system for road marking materials, NordicCert, applies to Denmark, Iceland, Norway and Sweden. In these countries, a documented product approval is required to use a road marking material on roads managed by the national road authorities. Product approval is based on monitored and documented performance measurements of material samples applied on test fields on public roads. The materials are approved (certified) in relation to the number of wheel passages they will stand, with preserved performance. The certification system includes road marking materials for longitudinal and transverse road markings in categories with respect to colour (white or yellow), type (type I, type II, type II inlaid, antiskid, hand application, non-reflective with enhanced durability, and temporary) and thickness (0.4, 0.6, 1.5, 3 and 5 mm). The present report documents the follow-up performance measurements that were carried out at the test fields in 2022, i.e., one-year follow-up measurements for materials applied in 2021 and two-years follow-up measurements for materials applied in 2020. The performance parameters include the coefficient of retroreflected luminance (RL) under dry and wet conditions, the luminance coefficient under diffuse illumination (Qd), the friction, the chromaticity in daylight, and the chromaticity of retroreflected light (yellow materials, only). Out of the 34 materials applied at the Icelandic-Norwegian-Swedish test site in 2021, 28 fulfilled the performance requirements in at least one roll-over class P0–P4 after one year. Out of the 44 materials applied in 2020, 2 fulfilled the performance requirements in roll-over class P5 after two years. Out of the 8 materials applied at the Danish test site in 2021, 5 fulfilled the performance requirements in at least one roll-over class P0–P5 after one year. No material application was carried out in Denmark in 2020. En nordisk certifiering av vägmarkeringsmaterial, benämnd NordicCert, introducerades 2015 och omfattar för närvarande Danmark, Island, ...
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