TY JOUR TI Specific features of the railcar kinematics causing rolling stock derailment when traversing turnouts KW safety of train operation KW track switch KW freight car KW automatic coupling KW rolling stock derailment KW railcar kinematics JO Bulletin of scientific research results AU Ermolenko, I.E. AU Koven'kin, D.A. PY 2026 IS 2026 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"