LOW BEAM VISIBILITY DISTANCES TO TARGETS ON DRY AND WET ROAD SURFACES RELATED TO REFLECTION PROPERTIES ON THESE SURFACES

Low beam visibility distances have been measured to dark grey and black targets on dry and wet road surfaces with different reflection properties. The result of comprehensive physical measurements of the reflection properties of road surfaces is reported, with the focus on specular reflection. Furthermore, the texture and draining capacity of road surfaces are reported. The visibility distances to targets have been related to the properties of the road surfaces described according to the physical measurements.