Introduction. The practice of charging road tolls to compensate for the costs of the road construction and operation has been known since ancient times. The traditional approach to toll collection on motorways is that vehicles must stop and pay at the appropriate collection point (Toll Collection Plaza — TCP). At the same time, two payment systems are traditionally distinguished: an open one, in which the driver pays for traveling the entire toll section, and a closed one, in which, upon entering the toll motorway, the driver is obliged to take a ticket at the first point (station) of payment and return it upon exiting the motorway at the final payment point, paying for the actual distance traveled. In both systems, there are bound to be vehicle delays in TCP. In this regard, transport engineers and road design specialists face several urgent tasks, such as determining the impact of toll booths on the level of service, capacity and other traffic indicators on motorways, assessing the impact of TCP configuration and toll collection technologies on of the traffic flows indicators in the TCP zone and in the transport network. Problem statement. One of the modern methods of research and assessment of the state of traffic at toll collection points is microsimulation of the road network or individual TCPs. At the same time, the reliability of this analysis tool will be determined not only by the calibration parameters of the simulation model, but also by the quality of the adopted distribution of traffic flows. Purpose. The purpose of the work is to substantiate the method of traffic flows distribution when developing a microsimulation model of toll collection plazas via PTV Vissim software. Materials and methods. Single TCP scenarios are simulated in Vissim, which differ in the number of operation lanes, approaches to network reproduction, and applied traffic distribution methods. The results. The actual scientific and applied problem of justifying the method of traffic flows distribution in the microsimulation of toll collection plazas in PTV Vissim has been solved. An analysis of the possibilities of traffic reproduction methods in TCP using static routes, dynamic assignment, the PTV Vissim COM interface for dynamic assignment, “Managed lanes” routes was performed. In TCP models with the number of lanes from 3 to 6 with static routes and dynamic assignment, the realistic behavior of drivers when choosing a traffic lane in TCP is verified. An analysis of transport delays in TCP models was performed to compare the simulation results when using static routes and dynamic assignment.

To manage the quality of atmospheric air in the city, it is of great importance to study the formation of extremely high atmospheric pollution. The preliminary assessment of atmospheric air pollution allows to determine the contribution of road transport emission sources, with the help of which it is possible to simulate a specific situation and to give predictive assessments of the state of atmospheric air pollution, as well as to determine the ways to improve the environmental characteristics of road transport, develop the city road network and other factors. The transport model of the city is one of the tools for strategic transport planning that allows for the justification and adoption of effective and responsible design decisions in the field of transport and infrastructure. The following data analysis on the available sources of atmospheric air pollution of the city mains has been performed: an assessment of the road transport intensity, an assessment of the amount of nitrogen oxides emissions, an assessment of the level of nitrogen oxides in the atmospheric air. Measurements have shown that the average concentrations of nitrogen oxides in places of intense anthropogenic load –the crossroads of city mains – are dozens of times higher than the maximum permissible concentration. Nearby the city mains and crossroads, the maximum concentrations of pollutants are formed at low wind speeds with wind directions at an angle close to 45° to the main areas. On the basis of the calculations, the following model of nitrogen oxide pollution of the city mains was obtained – the dependence of the concentration of nitrogen oxides on the road transport intensity can be a criterion for zoning the city territory according to the degree of atmospheric air pollution.