Bogie for subway practice I. Main Specialized Necessities: Safety is the sole Criterion Bogie frame castings are usually not regular Solid iron sections. They bear the whole fat with the vehicle physique and passengers and continually stand up to a variety of impacts and vibrations within the keep track of. https://socialcreditu.com/post/9248_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html