Bogie for subway practice I. Main Specialized Requirements: Basic safety is the only real Criterion Bogie body castings will not be normal Solid iron sections. They bear the whole fat with the vehicle entire body and passengers and repeatedly endure many impacts and vibrations with the track. Their technical needs https://expressafrica.net/post/400346_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html