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Wladyslaw GolikLuminance Contrast in Road Lighting Technical University of Poznán, Poland Malgorzata Górczewska Technical University of Poznán, Poland Abstract Seeing in road lighting is a complex function of many factors widely described in the professional literature. One of the basic criteria of providing proper road safety is the possibility of sufficiently fast noticing an obstacle which is on the road. Its visibility is determined mainly by a luminance level and a luminance contrast. A well designed lighting device can provide its good visibility. The paper presents research results of the standard obstacle contrast proper for its reliable noticing on the road in the typical background luminance range, i.e. 0.5 - 2.5 cd/m_2.
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