The concept of uniform movement of traffic flows on the contour of city highways and streets.

The paper proposes a new approach to determining the parameters of traffic control on the contour of city highways and streets. This improves control efficiency by minimizing the total travel time on a network and reducing environmental pollution. To determine the control parameters along the contour of the highways, simulation modeling was carried out. It consists of sequential stages: construction of a geoinformation model of the contour of city highways and streets; determination of the contour of city highways and streets; determination of the parameters of the traffic light control cycle; determination of the redistribution of excess travel time in directions at intersections; determination of the balance of the regulation cycle; determination of the phase shift of traffic light regulation by solving the optimization problem using the Nelder-Mead method; reduction of transport delays and determination of the speed of uniform movement on the contour of city highways and streets. For the practical implementation of the proposed approach, the "contour" software has been developed. As a result of a model experiment on the contour of highways and streets of a large city (for example, Kharkiv, Ukraine), the parameters of uniform traffic flow at a speed of 50 km/h were determined. Determination of the effectiveness of the proposed control method was carried out in the VISSIM software product of the PTV VISION company. The results obtained confirm an increase in efficiency owing to a minimization of time delays by 13%, emissions of harmful substances by 15%, and fuel consumption by 15% (during the simulation period). [ABSTRACT FROM AUTHOR]