STUDY OF TRANSPORT TRAFFIC FLOW CAPACITY IN THE CITY OF JONAVA
Keywords:traffic flow, roundabout, throughput, PTV Vissim
The article analyzes the E262 road section of Jonava city Jonava - Šveicarija, which belongs to the (A6) highway. In the mornings, the largest traffic flows and traffic jams occur for those arriving from Plento.g and departing from the city of Jonava on J.Ralio street, going to work in “Achema” or the military town in Rukla. These cars are moving through the roundabout, towards Taurostos Street. In the meantime, heavy transport moving along the E262 transit road arrives on Taurostos Street, and in order to continue, they load the roundabout, which causes a chain reaction and traffic stops for those arriving on J.Ralio Street, they load the passage for those arriving on Plento St. In the evenings, the situation changes, the flow of cars going to the city on Plento street changes, and for heavy transport coming from "Achema" I continue the E262 road through Taurostos street to Plento street. The data on passing traffic flows of vehicles were collected in a two-week period: from 15/08/2022 to 25/08/2022. Collected twice every four during days: Monday, Tuesday, Wednesday and Thursday. Attention was concentrated in the morning and evening peaks. The purpose of the research was to carry out traffic flow research on the "Jonava City Jonava – Šveicarija” E262 road section and to propose measures to improve the traffic flow. Analyzing the traffic data, it was found that the road section does not cope with the current traffic during peak hours. The PTV VISSIM (Student Version, 2022) software was used for modeling traffic flows. The simulation results of the improved roundabout with two additional exits are presented. The obtained simulation results showed that it would be most efficient to improve this road section into a "turbo" roundabout with several detours. The modeled intersection becomes twice as permeable as the current intersection, reducing the average traffic stoppage by a factor of 6 from 186 meters to 26 meters during the evening peak.