Determination of calculated parameters influence on wagon turnover time change at various periods on railway network

Introduction. Wagon turnover time change is commonly estimated by the location of wagons at sites, technical stations, public and non-public railway tracks, in local downtime. Experience shows that exclusive use of these data leads to inaccuracies and errors. The purpose of the study is to propose a new refined methodology for analysing the indicator of the wagon turnover time, and to show the influence of the calculated parameters included in it. The application of the methodology would allow to develop effective measures to accelerate turnover and improve the quality of the transportation process.

Materials and methods. Statistical data of railway transport operations for freight transportation in 1995–2024 are used. The main theoretical results are obtained based on algebraic transformations of dependencies linking the change in wagon turnover time with the change in the values of calculated parameters in various time periods.

Results. The authors developed a methodology for determining the change in wagon turnover time with in-depth details for various calculated parameters, which is used to analyse the influence for each of calculated parameters on the change in wagon turnover time in 2010–2024 for railway network. This period in characterised by the transition from stable values of the wagon turnover time with a general downward trend to a period with significant fluctuations with a significant upward trend, approximately in 1.5 times. This caused an increase in the required car fleet by more than 350 thousand wagons, excessive occupation of station tracks and difficulties in train traffic passage. The share of each calculated parameter in the growth of wagon turnover time and their rating for reducing the impact on the overall indicator have been established.

Discussion and conclusion. The developed theoretical proposals allow for a more accurate assessment of the causes of changes in wagon turnover time and provide a basis for making decisions aimed at improving the operation of proving grounds and railway network as a whole.

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