TY JOUR TI RATING METRO WITH DIFFERENT ELECTRIC TRACTION SYSTEMS BY ENERGY AND TECHNOLOGY INDICATORS KW brake system KW traction and energy problem KW the electric traction KW passenger transport KW the rating Metro KW asynchronous traction (AC) KW DC traction JO Alternative energy sources in the transport-technological complex: problems and prospects of rational use of AU Le Xuan, H.. AU Tulupov, V.. PY 2015 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov