2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
As most of the existing intersections in Dhaka city have already exceeded the capacity, we need to find alternative solution to minimize the losses in traffic jam. A proper traffic impact study needs to be conducted in order to know whether the alternative solution will mitigate the chronic congestion problem or not. A signalized intersection in Dhaka city, having diverse traffic and geometric characteristics is taken as our study area and data were gathered to calibrate and validate the model of that intersection created in microscopic simulation software VISSIM. After that, this study applies alternative option to the existing condition with the help of VISSIM. As an alternative solution, diamond interchange is used in this study. Diamond interchange uses less space than most types of freeway interchange and avoids traffic signal, which causes hours of operational delay. This research will look at reconstructing current four-phase non-lane based intersection in Dhaka city into a diamond interchange to see how it will perform to cope up with the current peak flow traffic of Dhaka city.