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The article includes research results of analyzing and evaluating 3ТЕ10М diesel locomotive`s efficiency on a hilly-mountainous direction Marokand-Navoi of Uzbekistan railways while hauling freight trains with and without stopping on through stations (division points).Main parameters of basic movement work of researched UzTE16M3 diesel locomotives are shown as tabled values and graphic dependencies,also equations of organizing necessary calculations mentioned above in accepted range of mass variation are marked here.

The article includes research results of substantiation 3ТЕ10М diеsel locomotive`s movement work parameters on a hilly-mountainous direction of railway while moving freight trains with stops and without any stops on the spaces stations and separating points

This article is about technical and economic indicators of the operation of freight locomotives at the ranges of Russian Railways. The most attention is paid to such indicators as train mass, fuel consumption, technical and district speed. There is an analysis of technical and economic indicators during the period from 2010 till 2019. Based on the analysis of technical and economic indicators in the real mode of operation of freight diesel locomotives it's presented calculation of dimensionless train mass coefficients, fuel efficient use, district and technical speeds. The presented calculation fully characterizes as well using degree of technical and economic characteristics of diesel locomotives in of power and time as the effectiveness of system organization in their operation. To know the operating modes of diesel-generator sets of diesel locomotives in train work is source material for the analysis of technical characteristics of locomotive power equipment and making recommendations on their optimization in relation to operating conditions

In the course of scientific support of design, construction and operation, as well as forecasting the development of transport infrastructure in the Arctic region, RUT (MIIT) scientists have proposed a methodology for working out new design and technological solutions by testing them on a small section of the route that has received the status of experimental; a number of solutions have been proposed that can be taken into account and used during the development of transport infrastructure in the Arctic. To verify the university's developments, a number of expeditions were undertaken to study the features of the conditions of construction of transport facilities, including climatic and engineering-geological, as well as the condition of existing transport facilities (the Salekhard - Igarka Polar Highway): survey expeditions in 2005, 2012; joint expeditions with the Russian Geographical Society with the participation of scientists from the Institute of Roads, Construction and Structures of the Russian Institute of Transport (MIIT) in the Arctic region in 2019 - 2021, during which a geomonitoring network was organized; data on temperatures in the air, near-surface zones and in the ground environment were obtained; the analysis of the ground environment was carried out; recommendations were given on the specifics of the construction of transport facilities, including the construction of the roadbed, using different variants of technical and structural and technological solutions. The purpose of the article is to generalize the experience of the development of the northern territories through the development of transport communications and the testing of new structural and technological solutions for the construction of the roadbed by means of a local section of the highway in the status of a pilot site. The approach presented in this article can be used to form a methodology for solving the problem of creating an effective High-latitude Russian transport system in the Arctic zone of the Russian Federation with forecasting trends in its development.