Unplanned tram disruptions in Wrocław: a spatial and cartographic analysis

Abstract An analysis of tram track conditions in Wrocław was conducted, focusing on the locations and causes of unplanned tram stoppages. Records of such incidents are not maintained in a standardized manner. In 2019, a total of 1,084 incidents were reported and described using over 100 distinct terms. The description of the location of these events was often limited to the street name. Of these incidents, 109 stoppages were attributed to track damage. In approximately 10% of these unplanned stoppages, the condition of the railhead played a crucial role – an area over which infrastructure managers have significant influence. To assess the spatial distribution of these stoppages, a map illustrating their occurrence was developed. Cumulative diagrams for each street were plotted on this map and overlaid with track condition data. The application of spatial data analysis provided valuable insights into the patterns and determinants of unplanned tram stoppages.