Bogie for subway train I. Main Technical Prerequisites: Safety is the Only Criterion Bogie body castings usually are not common Solid iron areas. They bear all the body weight with the motor vehicle human body and passengers and continuously endure many impacts and vibrations within the observe. Their technical prerequisites https://www.bib.az/post/227916_this-is-the-periodic-wear-on-the-top-surface-of-the-rail-resembling-waves-when-t.html