Abstract
The pedestrian is the least protected road user. A large number of accidents involving pedestrians occur at pedestrian crossings. Bad lighting or a complete lack of it is one of the causes of accidents in these places. Currently, there are no uniform requirements in Europe for the lighting of pedestrian crossings. Each country is trying to create its system of requirements and assessment of lighting of pedestrian crossings. Measurement procedures and required lighting parameter values often vary significantly across countries. This paper discusses the results of measurements carried out at selected pedestrian crossings using two different measurement grids. The lighting quality at the tested crossings has been assessed based on the lighting requirements in force in two EU countries. In addition, we present the results for the illuminance contrast of a measurement board, representing the silhouette of a pedestrian on a crossing, with the background. Based on the determined contrast, we attempted to verify the lighting conditions using an evaluation system described in the literature, which employs fuzzy logic algorithms.
Highlights
Street Lighting in PedestrianAnnually, more than 22,000 people die and over 1 million are injured on European roads
Analyzing the measurement results obtained with the two different measurement grids, we can conclude that similar values were obtained for the vertical illuminance
In addition to checking the quality of illumination at the crossing itself, the measurements performed for selected pedestrian crossings were intended to assess the possibility of using different measurement procedures with very similar lighting requirements in terms of the vertical illuminance in the conflict zone
Summary
More than 22,000 people die and over 1 million are injured on European roads. While during the day a pedestrian’s visibility is determined by factors other than lighting, at night proper zebra crossing lighting can reduce the number of accidents involving pedestrians by about 20–30% [4]. The best lighting conditions at pedestrian crossings, and improved pedestrian visibility, can be achieved by illuminating the crossing with a luminaire with asymmetrical light distribution This solution allows for high values of the vertical illuminance value and a positive luminance contrast between the pedestrian and the background (Figure 1). The procedure adopted for the measurement of luminance contrast at the tested pedestrian crossings is described. Test results and their analysis are given.
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