TY JOUR TI Passive Safety of Freight Wagons As a Criterion for Innovative Freight Rolling Stock KW Passive safety KW freight railcar/wagon KW innovative rolling stock KW sacrificial elements KW crash buffer JO Proceedings of Petersburg Transport University AU Komaydanov, A.A. AU Smirnov, A.N. AU Zverev, M.V. AU Chernova, T.M. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"