Abstract
Uniformity of the luminance is an important criterion for the appraisal of the quality of road-lighting, because it not only influences the conditions of perception but moreover determines the impression which the roadlighting makes upon the observer. Uniformity of the luminance is defined in "Recommendations" of CIE and in Richtlijnen en aanbevelingen voor Openbare Verlichting", published by Nederlandse Stichting voor Verlichtingskunde.