Bogie for subway educate I. Main Technical Necessities: Safety is the sole Criterion Bogie frame castings are usually not regular Solid iron pieces. They bear the whole fat with the vehicle physique and passengers and continually face up to several impacts and vibrations within the keep track of. Their technical https://www.geto.space/post/72795_in-curved-sections-or-areas-with-frequent-braking-the-surface-of-the-rail-will-d.html