TRAFFIC FLOW IDENTITY IN THE CONDITIONS OF THE CITY

The movement of a traffic flow along city highways is described by the movement of waves of speed, intensity and density, the equations and characteristics of which allow solving applied problems of traffic control, designing city highways and street-road networks and assessing the quality of existing traffic in cities. On the routes (sidewalks) there are flows of people (pedestrian flows) walking, on the streets and roads there are flows of cars (car flows), in public transport passengers are combined into passenger flows. These are flow systems that are modeled by a tetrahedron of states, but have their own identity: their flow units (car or step sizes), their travel distance, their travel time. For the qualitative restoration of Ukrainian cities, the identity of transport and pedestrian flows is revealed in comparison with different flow systems. The physical essence of traffic flows, their characteristics and interrelations in time and space are revealed. The simulation was based on the theory of state graphs, which made it possible to establish new characteristics of urban flows, such as traffic intensity, specific intensity, passability, traffic inertia, transience, road and transport potentials, exergy and flow power. The throughput capacity of the highway lane, ways to increase it and reduce congestion are determined.