some kind of term was introduced by the founder of science, should the movement in belarus by vrubel andreevich back in the eighties of the last century. this is in our then polytechnic institute. now the university. we develop it further than the bed we were again, then. he led this concept, which means that this is the cost of costs in the process of moving above some optimal level. well, for example, we have a delay. each hour delay costs conditionally 15 rubles. stopping by car costs, for example, 25 kopecks. kilometers, overrun also cost some money. here we just consider all these natural indicators for variants. here we calculate their cost. and here we compare with the optimal level. this difference will be called losses. therefore, such a name turned out, that is, it needs to be explained, but it has already developed like this. we are used to it, but for a fresh ear, eyes. probably it should really be explained. we have four types then in the methodology. this technique is used to assess the quality of movement. the less loss of all the better. that was some kind of goal. so it provide