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Traffic Simulation

887 Words4 Pages

Abstract
Microscopic simulation can provide insight into the behavior of large-scale congested road networks, and provides a very useful tool for predictive network management. This project aims to carry out microscopic traffic simulation and volume calibration through VISSIM, a traffic micro simulation software, for the analysis of a signalized intersection at Johar Chowrangi, Karachi. VISSIM “Verkehr In Städten– SIMulation model" (in English "Traffic in cities - simulation model") (1), is a multimodal traffic micro-simulation software for modeling and simulating road networks and operations. This software uses car-following model that relies on different parameters to represent driving behavior
In Karachi, the driver behavior is very different …show more content…

Scope and Limitations
Scope of this study is limited to the calibration of one four legged at grade signalized intersection located in a sub-urban area (not a central business district area) of Karachi.
This study includes only the volume calibration, i.e. other traffic parameters are not calibrated. Research Significance
By modeling complex intersection and road networks, we can simulate the actual road traffic conditions on a virtual model and also provide a visual representation of any proposed changes on roads. So, instead of making propositions based on statistical data, it enables us to exactly know the effects of any modification, thus determining the effectiveness of that modification. Chapter 6: CONCLUSION AND RECOMMENDATION
The conclusion of the whole project is given in this chapter and some recommendations for future researches on the topic are also …show more content…

It is composed of two main components: a traffic simulator and signal state generator. The traffic simulator is in charge of the movement of vehicles, while the signal state generator models the signal status decision from detector information of the traffic simulator and then passes the signal status back to the traffic simulator.
Its traffic model is based on the work of R. Wiedemann (Wiedemann 1974 and Wiedemann 1991), which combines a perceptual model of the driver with a vehicle model. Study Area
Karachi is a huge city having about 150 signalized intersections and more than 200 non-signalized intersections throughout the city (3), but the problem is that signals are not working properly at some places which will not give us our desired results. That is why we have selected Johar Chowrangi for conducting our study as its signal works 24/7 and it is located in a rapidly growing and important area of Karachi, where traffic network needs to be modeled for future scenario analysis. Aerial view of the site is shown in figures 1.1 and

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