TY JOUR TI Comparison of the length of the braking tracks of a freight train with single-pipe and double-tube power supply of the braking system KW valid braking distance KW preparatory braking distance KW single-pipe braking system KW two- braking system KW speed interval method KW valid pressing brake pad KW cast iron brake pad KW composite brake pad JO Proceedings of Petersburg Transport University AU Osipov, D.V. AU Ivanov, P.Y. AU Hamnaeva, A.A. AU Pronin, K.E. PY 2024 IS 21 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"