Development of a goniophotometer for measuring reflective properties of road surfaces

Abstract

Roads are areas of increased danger. Road lighting is one of the main tasks of lighting engineering. To calculate on the road the luminance, which is normalized in most countries of the world, and to design road lighting installations, it is necessary to know reflective properties of road surfaces. Concrete asphalt coatings have unusual spatial characteristics of reflection, which can be found in measurements. This work describes the stages to create an installation to measure reflective properties of road surfaces.