A Diploma Thesis titled “Long-term association of road accidents and weather conditions in European cities” was recently presented by Areti Thanasko. Data on average monthly temperature and precipitation for every city as well as the monthly number of road accidents for the period 1991-2017 was exploited. The application of statistical models revealed that increase of precipitation and temperature results at increase of road accidents. For the group of southern cities, the impact of weather conditions in road accidents is found more severe. For each time period, the rain has a negative impact on accidents, although their correlation is positive. Furthermore, temperature increase due to climate change slows down the improvement of road safety.