Published: 2009 | Category: Materials , Road marking , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors
This specification describes the procedure for determining the retroreflectivity of road marking material. A retroreflectometer shall be used having 30 metre geometry, that is, an entrance angle of 88.76°, and an observation angle of 1.05°. The retroreflectometer shall be calibrated against national or international traceable standards.
