TY JOUR TI Improving of Controllability for Freight Train Pneumatic Braking System KW pneumatic braking KW freight train KW braking system KW braking force KW control KW brake force operation KW brake release KW aimed braking JO Proceedings of Petersburg Transport University AU Tanaev, V.F. AU Rogov, A.M. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"