The plus9beads for airport applications were specially developed for the high demands of runways and helicopter landing zones. The innovation assures high visibility for the markings even in the case of steep approach angles. It also provides the best possible retroreflection in conditions where visibility is poor as it is with rain and fog. The particularly resistant glass composition ensures the high reflection over long periods of time. This allows to prolong the necessary re-striping cycles which consequently reduces disturbances of air traffic and safety risks in conjunction with maintenance work. The plus9beads have a refractive index of 1.9 and a size gradation of 300 to 850 microns. In combination with high quality marking materials, retroreflectivity readings of 800 – 1500 mcd/lx/m2 can be reached.