ROAD SURFACE REFLECTION PROPERTIES OF TYPICAL FOR BULGARIA PAVEMENT MATERIALS
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- TITLE: ROAD SURFACE REFLECTION PROPERTIES OF TYPICAL FOR BULGARIA PAVEMENT MATERIALS
- ABSTRACT: The luminance of asphalt road surfaces is a function of the horizontal illuminance and the reflection properties of the surface at any point. The reflection properties of the road surfaces depend on their physical condition, age and type (components and roughness of the surface). The current standards and recommendations are based on the luminance of the road surface and its distribution along the road. This distribution depends to a great degree on the reflection properties of the road. The existing standard tables of reflection of the road surfaces are not valid for all the road conditions. The cracked and old surfaces are typical for Bulgaria, which means that the reflection tables, given by the standard will not lead to a proper design of street lighting systems. The aim of the current investigation is description of the real reflectance characteristics of typical for Bulgaria road surfaces, according to their age, fracture of the materials and condition.
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