TY JOUR TI Optimization of Operating Cost at the Expense of Improving the Conditions of a Rolling Stock Interaction With a Railway Track by Equivalent Taper Parameter KW drag forces KW wheel pair equivalent pair KW traction calculations KW high-speed rolling stock KW operating costs JO Bulletin of scientific research results AU Blazhko, L.S. AU Bel'tyukov, V.P. AU Kiselev, A.A. AU Romanov, A.V. PY 2022 IS 2022 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"