This report is a full English translation from the Dutch of B 30405 (IRRD 833001). Road lighting represents only a relatively small part of expenditure, both regarding costs and energy. Nevertheless it involves considerable sums, and it is justifiable to use the money and the energy for road lighting as well as possible, particularly in times when public expenditure and energy consumption are being carefully considered. In 1981 the Ministry of Economic Affairs of the Netherlands issued a brochure to help local authorities to be more effective with the public lighting. The aim was to reduce the operating costs of public lighting without harm to the quality regarding road safety and public safety. The brochure is widely used. The data on which the brochure, as well as the recommendations it contained are based, need to be updated. There was some difference in opinion how to do this. It was generally felt that new research was needed. The research focused on urban streets and roads. The effectiveness of road lighting is a large area of research. Therefore the actual research is preceded by a preliminary study. The results of this preliminary study are presented in this report. (Author/publisher).
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