Carrying out renewal or modernization works on a railway line require temporary closures of track sections. An important issue is to plan the works to minimize the traffic disruptions associated with the track closures, but simultaneously limiting the total duration of engineering works. In this paper the influence of works coordination on different track sections on the size of traffic disruptions was examined. The analysis was performed for three different schedules of renewal project on a 30-kilometer section of double-track railway line No. 353 Inowrocław -Nieszawka. The results of the study indicates that grouping works on many tracks and sections may be beneficial for low traffic intensity, while for high traffic intensity (lines with a high level of traffic capacity utilization) it results in significantly longer travel times and the need to cancel trains).
The performance of railway engineering works involves the need to temporarily stop the train traffic along tracks covered by works. Track closures can be the reason for cancellation of selected trains, prolonging the travel time and changing the timetable. The issue of planning railway works in so-called operational closures in a short, weekly time span with minimized rail traffic disruptions is analysed in this paper. An optimization model has been presented, solution of which for a section of a railway line with a length of several kilometers and traffic of several hundred trains can be obtained in no more than a dozen or so minutes. The case study for maintenance works on the railway line No. 353 in Poland, on the section Poznań Wschód - Pobiedziska is presented.
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