The region is a complex multi-element and heterogeneous dynamic system. Regional public transport systems are characterized by heterogeneity and incompleteness of information about the processes that take place in them. The factors determining the demand for public passenger transport services, the structure of suburban population transit and the economic consequences of changing this structure have not yet been sufficiently investigated. There is no quantitative assessment of the control factors’ influence on the results of the passenger transport system functioning in suburban traffic, which complicates the effective management in this field.In order to determine the mutual influence of objects with unclear functional connection, one of the methods of computational geometry is considered, which allows quantifying and obtaining tabulated functions of various components and parameters of settlements' interaction and centers of gravity. The numerical characteristics obtained by the described method are further used in the modeling of the processes of efficient functioning and collaboration of urban passenger transport with other external transport types, in particular at interchanges.As a result of the proposed operations, we obtain a tabulated function of the investigated parameter for the area of spatial interaction of infrastructure objects and visualize the calculated parameters in the form of graphical dependencies or in the form of a three-dimensional surface. Thus, using the method of computational geometry, with constructing a Voronoi diagram and executing the Delaunay triangulation, it is possible to obtain tabulated characteristic parameters for inhomogeneous zones of mutual influence where infrastructure objects with unclear functional connection are located.
The main task in ensuring the appropriate level of organization of traffic on the street and road network of cities is to minimize traffic delays, increase traffic safety, provide transport and pedestrian communication between the planning elements of the city. Problems caused by the deterioration of the street and road network significantly affect the work of the entire transport complex of the city. Significant traffic delays, congestion, characterized by increased travel time, deterioration of transport services, increased pollution of urban environment due to increased emissions and noise, increasing the number of road accidents indicate the inconsistency of the road network of cities to the modern level of motorization. To ensure the required capacity of the elements of the road network, there is a need to create appropriate road conditions, namely the construction of new and reconstruction of existing engineering structures and elements of streets and roads. However, addressing these issues may not always improve the performance of the entire network, as, in parallel with technical measures based on the construction and reconstruction of transport infrastructure, the application of effective traffic management measures to manage traffic in urban areas should be addressed streets. When creating conditions for optimizing the operation of regulated intersections, it is necessary to take into account the technical condition of vehicles, road conditions and the condition of the road surface. One of the main tasks of any traffic organization is to increase the capacity of intersections and reduce vehicle delays, ie the passage of traffic lights with minimal delay. To solve the problem of congestion of the street and road network of the city is to increase the efficiency and use of coordinated management of traffic and pedestrian flows, improving the operation of traffic lights. To implement the introduction of coordinated traffic light regulation, or the so-called green wave, it is necessary to establish the intensity and composition of traffic flows, the capacity of the elements of the road network and the modes of operation of traffic light facilities. The paper considers the results of the study of the impact of coordinated traffic management in the central part of Rivne on reducing traffic delays when passing intersections by vehicles and proposed technical solutions to improve road safety by equipping intersections with additional technical means of traffic control.
Decision-making to improve the functioning of route systems is an extremely necessary, but at the same time difficult task, as it determines the overall socio-economic development of the city, the stability and safety of its transport complex. The purpose of this work is to establish patterns of formation and distribution of passenger flows for the transport network of the city with a description of models of their operation. The traditional approach to determining the concentration of travel is described by "synthetic" models, such as gravity. A practical solution to the problems of transport planning is the modeling of behavioral demand, which is based on the concept of attractiveness function. The load of the transport network is determined by the number of vehicles on it. Download simulation is the distribution of inter-district correspondence along specific paths connecting district pairs. In normative models, the distribution of traffic flows is based on the optimization of some global criterion that characterizes the efficiency of the entire network. The descriptive approach is based on the principle according to which each participant seeks to minimize their own costs. The most effective is the model of finding the equilibrium distribution. One of the variants of which is used to distribute users of one class. In this way, the location of transport interchanges in the transport infrastructure of the city mainly determines their transport structure. The distribution of passenger correspondence between interacting infrastructure objects is described by a gravitational model. The equilibrium distribution search model should be used as a task to optimize the distribution of traffic flows.
Highway are extremely important for the economic development of Ukraine. Road intersections are the critical part of the road network in terms of capacity, service level and safety. This is a place where oppose traf-fic flows are constantly changing and thus changing the traffic situation. To study the safety of traffic, we have chosen the problematic intersection of the city of Dubno, the intersec-tion of Mostova and Kremenetska streets, which are main roads with intensive round-the-clock traffic flow. The main feature of this intersection is the proximity location of the railway crossing. The PTV Vissim software was used to simulate the driving conditions of this intersection. As the initial data for modeling the intersection were used: observations of traffic flows, the number of vehicles, their distribution at the intersection, accumulation at a prohibited traffic light signal while waiting for a train. It is established, that the distribution of traffic flows in the main direction is 73,6%, while the left turn is made by 26,4%. The intersection is characterized by the 24-hour saturated traffic flow with frequent traffic stopping of vehicles of the main direction, which is due to the movement of trains. From the point view of the organization of traffic safety, the following road situations are observed: difficult driving; non-compliance with the trajectory of turning vehicles due to the overall features of transport or the choice of an insufficient trajectory of changing the direction of movement; the choice of an insufficient rounding radius for turning right (especially observed at night); the difficulty of performing a left turn, when the signal of the main direction railway crossing is prohibited. In order to speed up the passage of the intersection by vehicles, reduce the risk of traffic accidents while wait-ing for the train to pass, the convenience of crossing the road by pedestrians should be provided for: 1. Two traffic lanes in the main direction; 2. Pedestrian crossing of the main direction; 3. Marking traffic by traffic lanes; 4. Arrangement of modern lighting. Thus, the proposed measures will improve the efficiency and safety of crossing intersection, especially in the case of nearby railway tracks. The simulated traffic conditions for passing the intersection by vehicles indicate a positive trend, namely: a decrease in the delay time for passing the intersection when making a left turn by 50.6% and an increase in the overall speed of traffic by 24.3%. Keywords: crossroads, vehicles, railway tracks, traffic flow, safety, modeling.
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