جستجوی مقالات مرتبط با کلیدواژه « Traffic simulation » در نشریات گروه « عمران »

Today, one of the main challenges of traffic is affected by pedestrians, that the different behaviors of people have a direct effect on traffic parameters. The main goal of this research is to improve and improve traffic flow and improve traffic for vehicles and pedestrians.  For this purpose, a case study was conducted on the behavior of pedestrians at the level intersection First of all, the traffic statistics of pedestrian and vehicular traffic were collected in the eight crossings of this intersection in the mentioned time periods, and by using the traffic simulation for vehicular and pedestrian traffic in this intersection, as well as considering and applying behavioral parameters and calibration for vehicles and for pedestrians in  considered  In order to identify the effect of pedestrian behavior and match it with reality, three scenarios were considered in the case study, in which the first scenario is related to the simulation of the intersection without considering the pedestrian traffic, the second scenario is the simulation of the intersection with the consideration of the pedestrian traffic and  Finally, the third scenario is the real behavior of people by simulating it in viswalk, considering the pedestrian traffic.  The results showed that the quality of traffic parameters in scenario 2 and 3 compared to scenario 1 has decreased by 13.5 and 25% respectively for the total speed of vehicles and increased by 21 and 38% for density, in fact the effect of traffic interference and pedestrian behavior  Pedestrians and riders indicate traffic flow parameters.

Demand for travel in Tehran, in line with the movement of people to work, increases in the morning from different areas to the city center and in the evening from the center to other areas. , an area including Shahid Hemmat Highway has been examined. Based on the simulation in Aimsun software, according to traffic input information such as vehicle volumes, vehicle dimensions, vehicle speed, physical parameters including delay, speed, travel time, mileage and fuel consumption index has been extracted. First, traffic volumes were counted at different times of the day and traffic information, including peak hours, was obtained from traffic volume information. In the next step, the speed of the vehicles,, after drawing the researched network in the software environment, the collected information including the equivalent rides, speed and capacity has been entered into the Aimsun software. Then, the current situation of the study area is compared with the proposed scenario, ie allocating a lane from solitude to crowded direction. Based on the simulation results, it was found that at the peak of the morning, the conversion path to 5 lines from 4 lines and the return path conversion from 4 lines to 3 lines improve performance indicators including latency, speed, travel time, density.At the peak of the evening, if the route is changed from 4 lines to 3 lines and the return path from 4 lines to 5 lines, it will improve performance indicators

This article seeks to improve the traffic situation in one of the squares of Kerman. In this article, first the traffic intensity in the objective location is examined in consecutive days and hours, and its traffic node is extracted using visual criteria. The extracted traffic junction is shown to be one of the intersections adjacent to the square, which causes the traffic to bounce back to the square, making the the underpass built in the square useless. In this study, first, regulations are mentioned to improve the general condition of this intersection, and in the next step, traffic simulation is used to improve this specific intersection. To simulate the raw data, the volume of traffic passing through this intersection was required, which was captured using several people and using several video cameras. After capturing this data using video cameras, the required information was extracted using a review of these videos. In the next step, using simulation, 5 solutions were proposed to improve the condition of this intersection, which could improve the traffic parameters of this intersection, including reducing the delay to one third of the non-performance option. The study also examined the economic implications of these options, which showed a 39 percent improvement in the cost imposed by the non-coplanar intersection over the status quo.