ANALYSIS AND STUDY ON GRAPH-ANALYTICAL MODELS FOR COORDINATED TRAFFIC MAINTENANCE IN CITIES

Mirena Todorova; Vasil Koprivshtenov

Scientific paper ID 2541 : 2024/3

ANALYSIS AND STUDY ON GRAPH-ANALYTICAL MODELS FOR COORDINATED TRAFFIC MAINTENANCE IN CITIES

Mirena Todorova, Vasil Koprivshtenov

In recent decades the population has repeatedly been urbanized, which is parallel with the growth of cities and increase of the number of vehicles that cause traffic jams on main road arteries. Therefore, project solutions for traffic optimization on the already built road infrastructure has been sought. The increased traffic is an intractable case in many places all over the world leading to one and the same negative effects air pollution, noise pollution, vibrations, harmful emissions, time losses of employees due to traffic jams, wear and tear of road pavements and other infrastructure damages as well as increase of fatal and non-fatal accidents. As it is still free to enter the city center of Sofia as well as to use the busiest arterials, that leads to congestions. Therefore, it is necessary to coordinate signals to minimise vehicle delays and increase the average speed of running. The paper analyses the graph-analytical models for coordinated traffic maintenanmce by choosing an appropriate method to apply. Using the time-space diagram, an algorithm has been developed to select a method of coordinated signal control in a boulevard with different distances between traffic lights, which is typical for the capital of Bulgaria. The algorithm has been verified through its application in a specific section of the street network of Sofia.

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координирано управление светофари трафик графоаналитични моделиcoordinated control traffic signals traffic graph-analytical models time-space diagramMirena Todorova Vasil Koprivshtenov

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