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The functioning of international transport corridors is directly related to benefits in terms of personal mobility and economic activity. Transport is one of the main branches of economy without which the functioning of a modern economy is impossible in general. It ensures necessary economic links, joins all industrial units of a country into one whole thus establishing the conditions for economy to function coherently and efficiently. Thus, transport is an important branch of economy, however, its infrastructure expansion needs much investment. That is why investment projects for the development of the transport structure have to be thoroughly selected, and their implementation has to ensure sufficient efficiency not only economic but social terms - the indirect ones as well sometimes having even greater consequences on society than direct effects. Despite the fact that MCA as an instrument allows decision makers to include these criteria in so popular Cost -- benefit analysis, the research performed by the authors shows that the instrument in assessing social effects of transport corridors remain limited and present the reasons. [ABSTRACT FROM AUTHOR]

At all the repair enterprises, despite decreased rim wear-off resistance, after every grinding only geometry wheel profile parameters are renewed. Exploit wheel rim work edge decrease tendency is noticed what induces acquiring new wheels. This is related to considerable axle load and train speed increase and also because of wheel work edge repair method imperfection. [ABSTRACT FROM AUTHOR]