%0 Journal Article %T Efficiency Rise in Functioning of Low-Intensity Lines: Problem Statement and Mathematical Models %A Kovalev, K.E. %A Novichihin, A.V. %K railway transport, managing approach, low-intensity lines, transportation process management, transportation management, fuzzy cognitive maps %J Proceedings of Petersburg Transport University %D 2022 %N 19 %P 11 %I FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"