appeared, city and train, there used to be a suburb, well, the most striking example is moscow mcd, mcc mcd, where. goes exponentially, immediately in tens of percent, just recently they launched mtsd-3, mtsd4, an increase of 20-30%, convenience is immediately visible, and comfort, including across the country, mountain and city transportation is also growing, and what was before was, considered a disadvantage, railway tracks inside the city are currently our advantage. since we can miss the wonderful rolling stock as an urban agglomeration transport, our machine builders and partners have created new trains, evilgial, swallows, and other types of rolling stock that are extremely in demand, very convenient, are in great demand, well, talk a lot about the modernization of rolling stock as well composition and from here it immediately seems to me a logical technological question arises. once upon a time at the time, there really was a purchase of a batch of japanese reals, which were tested in a number of directions , they differ in quality, in some places they were convenient, at the moment