Ricerc@Sapienza

The risk of traffic fatalities varies significantly across high, medium and low-income countries. Among the reasons for this in the latter ones, there is often a lack of road safety knowledge and political will. Road safety is a multidisciplinary topic and requires trained professionals able to identify and implement efficient measures in the areas of engineering, enforcement, education and emergency services, taking into consideration social and economic aspects as well.

Road traffic movement at nightfall (twilight) is characterizing by a reduction of light time of the day and the rapid nightfall onset, thus the driver's eyes have less time to adapt to rapid sudden changes in illumination. The visual perception and the reaction time of the driver in conditions when pedestrians appear in nightfall conditions on the street and road network in a city is considered in the paper. Researched was conducted in uncontrolled pedestrian crossings in nightfall conditions on Ukrainian roads.