%0 Journal Article %T A comparative analysis of the causes underlying unscheduled repairs of passenger railway cars %A Vishnyakov, I.A. %A Evseev, D.G. %K passenger railway car, unscheduled repair, ongoing uncoupling repair (OUR), mileage, railway car age, operational efficiency %J Bulletin of scientific research results %D 2026 %N 2026 %P 8 %I FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"