UIC 612-2 Ed. 1 (2009) Specific Sub-system Requirements (traction, Braking, Etc.) For Emu/dmu, Locomotives And Driving Coaches (rolling Stock Sub-system Requirements, Requirements For Economic Purposes, Requirements For Railway Standardisation) Describes requirements for main sub-systems, especially for traction and braking, for EMU/DMU, locomotives and related driving coach driver cabs & to increase economic performance and ensure standardi