Investigation of the impact of public transport type on vechicle delays using simulation results in PTV Vissim 8
Students Name: Kuzmyn Andrii Romanovych
Qualification Level: magister
Speciality: Cargo and Transport Management
Institute: Institute of Mechanical Engineering and Transport
Mode of Study: full
Academic Year: 2020-2021 н.р.
Language of Defence: ukrainian
Abstract: The time spent by passengers on travel during work or other trips is one of the main indicators that determines the level of passenger service by urban passenger transport. An integral part of the total time spent by passengers on travel, is the waiting time for passengers of vehicles at stops, which occurs due to the presence of intervals of movement of vehicles on routes [1]. Analyzing these methods of calculating the amount of expectations of urban transport passengers, we can conclude that each of them can be used by transport modeling engineers to create macromodels of urban transport route networks for different cities [2-4]. However, there are models for calculating the waiting time of passengers of the vehicle at the stop, which take into account the actual parameters of traffic on the route. They are obtained on the basis of the method of simulation of the actual time of vehicles and passengers at the stopping point. This approach to calculating the waiting time for passengers is more complex compared to the analytical dependencies, but its results take into account the actual conditions of operation of urban passenger transport [5-6]. Study object – research is public transport stops on the main streets. Scope ofresearch – the patterns of formation of vehicle delays in the area of ??public transport stops. Goal of research: to determine the patterns of influence of public transport stops on vehicle delays. As a result of the research of traffic delays within the public transport stops, the main street of Lviv was chosen, namely the street Gorodotskaya with heavy traffic. Through the studied street there is an intensive flow of medium and large capacity buses, as well as the movement of trams. The capacity of each stopping point is determined. It was investigated that the length of stay of vehicles at a public transport stop, which varies from 46,6 to 65,11 s, which indicates a significant impact on the capacity of the road network. Therefore, the influence of the type of public transport stops on vehicle delays was investigated using the specialized software product PTV Vissim 8. It is established that as the level of roadway loading increases, the transport delay at the selected objects of the study increases. A significant increase in transport delays is observed at stops located near the carriageway, when it is impossible to get ahead of public transport, which stopped for boarding and disembarking passengers. Increasing the time of use of the stopping point, leads to a decrease in the capacity of the road network, this is due to the formation of a queue of vehicles. Cars need to go around public transport that has stopped for boarding and disembarking passengers, as a result of which the carriageway in this area becomes less than one lane for traffic. 4 Regularities of duration of public transport stay at the stop for delays and speed of traffic flow have been developed. It is established that with increasing the duration of public transport for boarding and disembarking passengers, the flow rate decreases. In the area of public transport stops there is a decrease in flow rate. At almost all study sites, the flow rate at the stop section decreased to 10-30 km / h, depending on the length of public transport. However, at the combined bus-trolleybus stop of public transport the flow rate is 5 – 10 km/h. After overcoming the public transport stop, there is an increase in flow speed. During the duration of public transport at the stop (20 s), the flow rate becomes the most important. Modeling the impact of the duration of public transport on vehicle delays allows to identify the "bottlenecks" of the road network and develop measures to improve the economic efficiency of road transport. Keywords - public transport stop, transport delays, stopping capacity, simulation, speed. References. 1. Kreysman, E. A. (2002). Udoskonalennya metodyky orhanizatsiyi avtobusnykh perevezen? v transportniy systemi mist, 196. 2. Yermak, O. M. (2010). Roztashuvannya zupynochnykh punktiv mis?koho pasazhyrs?koho transportu, 22. 3. Krystopchuk, M.YE, Pashkevych S.A. (2019). Formuvannya mists? roztashuvannya transportno-peresadochnykh vuzliv, 75 – 76. 4. Krystopchuk, M. YE., Lobashov, O. O. (2012). Prymis?ki pasazhyrs?ki perevezennya, posibnyk, 224. 5. Koliy, O. S. (2017) Ratsional?ne roztashuvannya zupynochnykh punktiv avtobusnykh ta troleybusnykh marshrutiv vidnosno rehul?ovanykh perekhrest, 247. 6. Royko, YU. YA. Vyznachennya ratsional?noyi vulychno-dorozhn?oyi merezhi, sformovanoyi zhytlovymy kvartalamy, 25.