Introduction. The authors arise the question of increasing the efficiency of the municipal machine. Moreover, the influence of the clamping force of the brush body on the surface and on the brush deterioration and, as a consequence, on the quality of the roadway cleaning is highlighted in the article.
Methods and materials. The results of the changing process of the brushing tool vertical coordinate in the municipal machine were presented, depending on the displacement of the hydraulic cylinder rod. The analysis of the existing types of the brushing working body suspension was carried out. As a result of such analysis, the authors established the most frequent usage of the three-point and parallelogram suspensions, the schemes of which were also presented in the article.
Results. The equations of geometrical connections of the municipal machine elements, which could be used in mathematical model, are presented. In addition, the kinematic diagram of the municipal machine with the brush working body suspension is drawn up. Therefore, the  presented model takes into account such parameters as the length of the levers’ arms, the linear movements of the hinges, the rod stroke, the levers’ angles and the distances between the hinges. The methods and the course of the experiment for determining the displacement dependence of the brush body from the displacement of the hydraulic cylinder rod are described. The authors also present the photographs of the experimental research fragments.
Discussion and conclusions. On the basis of the obtained data, the authors construct the experimental and theoretical dependences’ graph of the brush body displacement and the actuator hydraulic cylinder rod displacement. The analysis of such graphs confirms the adequacy of the geometric constraint equations and also proves that these equations could be used in the mathematical model of the position controlling process of the brush operating body and also for determination the optimum value of the brush working element clamping force to the surface.

Introduction. Soil compaction plays a crucial role in the construction of road foundations. The quality of this process is influenced by the type and modes of application of external force from the seal. The most effective is the vibrating machines’ compaction, which have a wide range of control parameters. Therefore, manufacturers are focusing on the production of multifunctional vibratory rollers. However, the driving force of the vibration exciter in such machines has a harmonic character, which does not allow the usage of such machines in cramped urban conditions and when compacting thin layers, due to large oscillation amplitudes. The purpose of the research is the development of an innovative design of the road roller vibratory working body, realizing not only  harmonic, but also oscillatory vibrations, which have a more ergonomic amplitude response. The article presents a sample of the working body improvement of an oscillator roll with double shell, showing the positive qualities of vibrating oscillatory and static road rollers, when thick layers are thickened or low - when thick layers are thickened and the contact pressure angle of rotation of the inner and outer shells require to achieve regulatory density. Such innovative technical solutions would significantly reduce costs and improve the quality of construction work.
Materials and methods. The calculated methods reveal the main parameters of the oscillatory vibration mechanism of the road roller. The technical characteristics of the road construction machine are investigated. The research is carried out on the grant basis of the Russian Foundation for Basic Research No. 18-48-550005 / 18.
Results. The results of research represent a new perspective design of the working body for the road roller and reduce the energy consumption of the road construction materials due to the possibility of the torsion vibrations’ moment of the same rotational frequency of the unbalanced rollers of the drum and simultaneously adjust the contact pressure by changing the surface of the roller. Therefore, such research allows to confirm the performance of the proposed technical solution. 
Discussion and conclusions. The proposed technical solution shows the positive qualities of rollers with an oscillatory vibration mechanism, and rollers with continuously varying contact pressures. The torsion vibrations, created by the oscillatory vibration mechanism of the roller, reduce the resistance to compaction of building materials due to the shear load transmitted from the roller to the material. These qualities contribute to improving the performance and energy efficiency of the  compaction process of building materials in road construction.

Introduction. The creation of new machinery and development of modern technologies of its repair in many respects with generation of materials with required properties are defined. Special attention is paid to the economy and widespread introduction of resource-saving and environmentally friendly technologies and to the problems of obtaining and exploitation of new materials, improvement of the goods’ quality.
The quality control of materials, which have been used for plain bearings manufacture, during repair action of construction machinery and equipment, as well as reduction of cost and duration of technical control operations implementation are among the issues for repair service organizations. Their solution would enable to increase post-repair resource, cut down failures number, and reduce costs of faults removal in warranty period.
Materials and methods. The authors suggest a thermal method of plain bearings materials quality assessment in internal combustion engines. This method is remarkable for its comparative simplicity; it does not require destruction of the material and application of expensive equipment.
Results. The dependences of “Cummins” and “Mahle” bushings thickness change on the heating temperature as well as samples warming temperature dependence on test duration have been obtained. According to the derived results such parameters as specific heat and thermal conductivity coefficient are defined. The results of carried out tests show that thermal physic parameters of unoriginal bushings differ from original ones by 11% in thermal conductivity coefficient and by 1.56 times in specific heat.
Discussion and conclusions. The calculation of specific heat, thermal conductivity of plain bearings allows to determine the probability of their failure at the stage of entrance control and therefore, to make a more correct decision when choosing parts for execution high-quality repair. As  a consequence of temperature change comparison, when bushings samples of “Cummins” and “Mahle” companies are heated, it could be concluded that heating intensity of an original bushing is 17% higher and the reciprocal of bushing temperature gradient under warming is 1.27 times lower in comparison with an unoriginal plain bearing.

Introduction. The most urgent tasks of road construction is to improve the sustainability of the roadway, on which the durability of the road surface largely depends and vibration processes are widely used. Moreover, the mechanization of production processes in  construction, the growth of power and speed of technological equipment lead to increasing in dynamic loads on its parts and assemblies. To reduce the dynamic loads in the parts and assemblies of construction machines and equipment, as well as to reduce the negative impact of vibration on the staff, it is necessary to isolate the vibration-generating units and assemblies from the base part of the machine.
Materials and methods. The vibro-supports of various designs are used to isolate the vibro-active elements of machines. The authors propose the vibration support design with a quasi-zero stiffness effect, in which the rubber-cord shell of the I-09 type is used as a supporting elastic element, and also the toroid-shaped rubber shell that relies on four identical support segments. In addition, each segment represents the fourth part of the annular tube and cut into two parts by a vertical  cylindrical plane. The outer parts of each segment are connected with hinges to the posts and fixed on the support base, and the inner parts of each segment are also connected to a supporting elastic element and a  vibration-proof mass is connected by means of hinges. The authors describe the working procedure of the proposed construction and compile the mathematical model of vibration support with a quasi-zero stiffness  effect.
Results. As a result, the equations of the mathematical model are performed in Matlab with the Simulink extension. The values of the equations are used to plot the strain variation of the toroidal shell of the corrector, which depends on the mass displacement, as well as on the motion patterns of a vibrationproof object of 100 kg for variants of the carrier spring without additional volume and with additional volume of the 1 - 10 Hz pneumatic spring carrier.
Discussion and conclusions. The authors determine the pressure in the corrector shell, depending on the isolated object mass. Therefore, the deformation of the corrector shell could be provided with a support structure due to the elasticity of the shell material. The usage of additional volume together with the stiffness corrector allows to obtain a wider area of the load characteristics with quasi-zero stiffness and to improve the vibration-protective properties of the support.

Introduction. The article is devoted to the problem of the crankshafts quality of automotive tractor engines on the example of YaMZ - 238NB engines. Despite years of experience in the repair industry to implement the technological process of the crankshafts grinding during their restoration, the quality of its implementation is not sufficient. Therefore, for reducing errors in restoring crankshafts, as well as in any other parts, it is possible only if the reasons for their occurrence are promptly identified. The purpose of the research is to identify the reasons of the errors in the process of grinding crankshafts for repair dimensions according to the results of technical control and observation of the technological process.
Materials and methods. The methodological basis for experimental and theoretical research is a system analysis. The structural and functional representation of the object is also used for research, and the model for the analysis of the grinding process serves as the basis for the  decomposition.
Results. While analyzing the measurements results of the rod necks connection and polishing for repair dimensions, the transformed experimental-statistical method is applied. The peculiarity of the method consists in the algebraic transformation of the calculation algorithm, which is reduced to simple formulas for semi-finished products and which makes it easy to program calculations on the  computer. In addition, the order of processing the number of obtained numerical values and construction of distribution curves is stated for estimating the correspondence between the probability of the experimental distribution and the theoretical distribution.
Discussion and conclusions. The implementation of the algorithm for calculating the accuracy and stability for the technological process of grinding the crankshafts during their restoration would reduce the error value. Moreover, the reduction of errors during the process of crankshafts restoration would improve the quality of repair, thus prolonging the crankshaft serviceability. 

Introduction. The paper substantiates the relevance of the development of regional transport strategies, which are basic for the implementation of organizational, technical and economic solutions aimed at the reorganization of modern urban and regional transport systems. Moreover, it is indicated that the development of strategies should be accompanied by a comprehensive and coordinated survey and modeling of transport systems, including within the framework of the regional programs of integrated development of transport infrastructure, projects for the creation of integrated traffic management schemes, as well as integrated schemes of transport services to the population. The aim of the research is to formulate the tasks consisting the proposals at the coordination of all the above and other programs that ensure long-term planning, continuity of decisions and budget savings directed to the development of transport in the regions.
Materials and methods. Methods of system analysis, theory of transport systems, as well as methods that are widely used in the community of transport engineers, including various options for  calculation and experimental methods of transport planning and modeling of transport systems for the city or agglomeration, are used to solve the research problems.
Results. Based on the information synthesis of the stages of regional transport strategies development, a sequence of actions is proposed, leading to the required methodological and organizational approaches, with which it is possible to perform the solution of the  strategic task. The authors formulate a list of major programs that need to be addressed at the level of regional ministries (departments) or departments of transportation municipalities with the goal of implementing transport strategies and aligning them with projects noted above. 

Discussion and conclusions. The main result of this work is the conclusion about the feasibility of rational actions of regional and municipal transport governing bodies, which could be planned within the framework of regional (municipal) transport strategies. The basis is the application of the proposed methodological and organizational recommendations.

Introduction. The results of estimating greenhouse gas (GHG) emissions by a vehicle fleet are described, using the COPERT-4 methodology and the baseline data contained in 1-BDD form, concerning the number of vehicle fleets in Russia and three options for detailing the fleet structure by the fuel type and ecological class in different organizations. Such data is not provided in the forms of state statistical reports and is generated by the researchers.
Materials and methods. Various approaches to the structuring of the park by the fuel type and the ecological class give a slight variation in the values of GHG emissions’ gross (up to 4.1%), which confirms the correctness and approaches’ validity to the generation of the required initial data. The authors introduce the concept of total conditional transport work in order to adjust the values of the average annual mileage to the generation of the required initial data in the calculation of GHG emissions gross by the fleet of cars. Moreover, the value of total conditional transport work for all considered GHG variants should be the same.
Results. As a result, if such adjustment is not made, the difference between the obtained calculated values of GHG emissions gross by the vehicle fleet for different authors would reach 25-30%. 

Discussion and conclusions. The reliability of the GHG emission values estimation is confirmed by the indirect method or by comparing the data of statistical reporting on the volumes of motor fuel consumption depending on different consumers in the fuel and energy balance, and on the fuel consumption values, and on the greenhouse gas emissions gross by the COPERT-4 method.

Introduction. The purpose of the article is to assess the quality of indoor air in university by measuring the concentration of suspended particles. In the Russian Federation, the rationing of maximum permissible concentrations of undifferentiated dust in atmospheric air depends on particle size.
Materials and methods. The research carries out measurements of suspended particles concentrations in the air of six audiences in the Moscow State National Research University of Civil Engineering (NRU MGSU).
Results. The obtained results of concentration measurements (particle/m3) are recalculates in mg/m3, and compared with threshold values of maximum one-time concentrations of suspended particles.
Discussion and conclusions. In calm weather, air pollution by suspended particles in the surface layer practically does not affect the quality of internal microclimate, which is associated with significant decrease of dust concentration in height and insufficient air exchange in natural ventilation systems.

Introduction. The author presents the results of the reliability analysis of the structural systems in spans of bridges.
Materials and methods. The analysis of published materials for the purpose of using them in the design of reinforced concrete bridges, in connection with changes in design standards and tightening of regulatory requirements for safety is made by the author.
Results. The results of surveys of slab superstructures indicate the reliability and durability of typical structures operated under normal conditions, but in emergency situations there is a danger of progressive collapse. Therefore, in such conditions, split schemes of multi-span structures are unacceptable. The research tasks to ensure the durability of slab superstructures are formulated. In particular, the task of developing the method of durability calculation in case of one of the pillars failure in the continuous span structure, taking into account the dynamic effect is illustrated.
Discussion and conclusion. Changes in design of slab structures of bridge cause the necessity to study the reliability and failure in emergency situations.

Introduction. The paper presents the thesis about the advantages of the process approach in the development of measures aimed at improving the efficiency of rubber products, using rubber-containing waste as raw materials. In addition, the insufficiency of existing approaches to the definition of business processes using typical raw materials, on the basis of which the author’s definition of the business process is proposed, is substantiated. The main approaches to improving the efficiency of such business processes is formulated, defined on the construction of the participants’ interaction system to meet their basic requirements. Moreover, the importance of studying the information space is highlighted, in which the formation of business processes is displayed.
Materials and methods. The research of the influence of information space on the formation of business processes for the production of rubber is carried out on the basis of such methods as the analysis of industry statistics, the study of legal acts that determine various aspects of the functioning of production and economic systems. The determination of the current state of the information space requires the research of materials of the state statistics service, marketing agencies and large enterprises of the rubber industry, using worn rubber products as raw materials. The requirements of suppliers of raw materials are also determined by an expert survey.
Results. As a result, the list of the main participants and the main requirements are identified. The authors show the significant impact of the resource factor on the efficiency of business processes for the rubber production. Therefore, The authors present the model of the participants’  interaction at the stage of collecting raw materials.
Discussion and conclusions. The list of the main factors hindering the development of the rubber products production is determined and ways to overcome the negative impact of factors by reviewing the mechanism of the business processes formation are considered. 

Introduction. The article is devoted to the export potential analysis of the electric power industry in the Russian Federation during the convergence period of the electric power complex into the Common Electricity Market of the Eurasian Economic Union.
Materials and methods. The authors review the main indicators of the electricity sectors of the Eurasian Economic Union State Members. As a result of the analysis, it is revealed that the Russian electric power industry is the most large-scale and diversified industry in comparison with other Union state members. It is substantiated that the electric power complex of the Russian Federation could be fully provided with Russian fuel and energy resources, which give additional stability and competitiveness. 
Results. The evaluation of the electric power industry export potential of the Russian Federation couldn’t be made without determining the electric energy competitiveness, in which, according to the authors, it is advisable to include indicators of specific reference fuel consumption, loss in grids and cost of electric energy, both on the territory of the Eurasian Economic Union State Members and in the overseas market. As a result of the competitiveness analysis, it was revealed that Russian electrical energy may have certain competitive advantages in the common market and in foreign electricity markets.
Discussion and conclusions. The main conclusions about the research results are made by the authors.

Introduction. The article describes the prospects for competitive advantages’ development of wholesale and distribution centers as the necessary agro-food complex infrastructure in the metropolis suburban area. Moreover, agro-food complex’s role in the formation of the modern institutional environment of suburban agriculture is also discussed.
Materials and methods. The causal relations of the need for the formation and functioning of the agrofood complex institutional environment in the suburban area, the creation of the internal food mechanism to the needy segments of the population are substantiated. The authors use monographic, statistical, graphic and expert methods in the research.
Results. The authors justify the suggestions to create an institutional environment for the functioning of enterprises and organizations, which are included in the system of internal food aid to the population. 

Discussion and conclusions. As a result, the mechanism for the infrastructure development of the metropolis agro-food complex, based on the resource potential assessment of the food market in the suburban area, is presented. In addition, the recommendations on the development of modern institutions that provide food to the population of the metropolis in the current restrictions of state agriculture support after the accession of Kazakhstan to the WTO are made. Moreover, the creation of the mechanism for managing the infrastructure provision of the agro-food market in the metropolis suburban area, based on the interaction of agents in the system of economic relations, the Executive authorities of the metropolis, district administrations of territorial entities, business structures and science is proposed.

Introduction. The paper deals with modeling of organizational-economic interaction between territorial units of municipal and regional level. Dynamic of the economic security indicators of municipal areas in the Omsk region is presented, problems of strategic management of municipal development are analyzed, the author’s cross-functional model of regional interaction is presented. In addition, the role of municipal partnership in the process of regional interaction is shown.
Materials and methods. The indices of economic security of the municipal entities in the Omsk region in the social, economic, financial spheres and the integrated index are calculated. Using the method of cross-functional modeling of business processes, the authors’ organizational and economic model of regional interaction has been formed.
Results. Negative results of the assessment of the main indicators of the municipalities’ economic security show that it is necessary to develop regional cooperation in the Omsk region. Currently, there are such forms of interaction between municipalities as associations of municipalities in the Omsk region, joint meetings of regional and municipal authorities on strategic and current problems of the territories. But these forms of interaction are formal. The authors come to the conclusion that it is necessary to organize “vertical” and intermunicipal processes of strategic management in economic development and security.
Discussion and conclusion. There are processes of organizing regional interaction on the basis of ensuring the economic security of the region. It requires an organizational and economic model that reflects the roles of the municipals in these processes, including the municipal partnership, the sequence of their actions and key indicators. Accordingly, the  developed model of regional interaction could become the basis for the formation of the system and the organizational and economic mechanism for managing the economic security of the region.

Introduction. Solving the problem of state financial support for commodity producers implementing import substitution programs is becoming relevant in the current economic situation in Russia. The paper briefly describes the options for attracting investment in production and logistics clusters.
Materials and methods. The paper uses the methods of synthesis and analysis, system and comparative analysis, expert assessments, principles for constructing economic and organizational structures, problem-oriented and situational approaches. The methodological basis of the study is the works of domestic and foreign scientists in the field of the macro- and mesologistics in the economic system.
Results. The technique of analytical substantiation of the state financial support for producers of import substitution programs is presented. A management model for production and logistics clusters to identify the best option for financing investment projects is proposed. 

Discussion and conclusions. The paper proposes the formation of production and logistics clusters for the initiative to attract investment and support sectors of the national economy, for example, the timber industry complex. Moreover, the necessity of creating territorial  innovation clusters based on the principles of public-private partnership is substantiated. The research demonstrates that it is expedient to form production and logistics clusters in order to proactively attract  investments and to support the industry from the states since investment risks do not attract large investors for the development of the timber industry complex.