Abstract
The objective is to assess the current traffic performance and possible bottlenecks in order to identify possible improvements and the effects of implementing remedial measures for the junction Podul Viilor Pitesti, following the methodology presented in the paper CAR20111263. The following basic information has been collected: 1) layout of the main junction/interchange, 2) links attributes as length, number of lanes, capacity, speed, 3) traffic control: signs and cycle times for controlled junctions, 4) traffic flows for the peak hours by category of vehicles and by movements. The analysed junction is located at the intersection of main arterials in the Easten part of Pitresti, providing access to the motorways and national road as A1 and to Bucharest, Rm. Valcea and Curtea de Arges, DN7 to Gaesti, Bucharest, DN73 to Colibasi, Campulung, Brasov and one of the main entrances in Pitesti on Podul Viilor. In this junctions the traffic conditions are heavy especially at the morning and evening peak hour. The simulation is carried out with the traffic model developed for the Podul Viilor junction. For the current case study VISUM transport planning software tool is used. The model development and application consist of the following activities: 1) Collect information about the junction/interchange layout and build the model network and zoning system, 2) Collect traffic information for the peak hours: morning peak and evening peak, 3) Develop the traffic model for the basic conditions, 4) Assess the basic conditions and identify the traffic performance, 5) Identify measures for improvements, 6) Implement the measures and estimate the effects. The effects of implementing the measures can be quantified by the average delay by vehicle for the junction and average delay by movement, and the emissions of CO, CO2, NOx, HC, PM10. The main purpose is a demonstration and practical one in order to identify the bottlenecks and to propose remedial measures to be further implemented in practice. The benefits of implementing the measures are estimated by comparing the total travel time and emissions with the basic situation.
Keywords: Data Collection, Traffic Impact, Junction, Traffic Performance, Traffic Flows