Computer simulation is important for the analysis of freeways and urban streets systems. Through simulation, Transportation specialists can study the formation and dissipation of congestion on roadways. The Roundabout (Bandar Baru Bangi) and intersection The National University of Malaysia (UKM) are two major causes that have a significant effect on travel time, delay, level of service, stop and degree of saturation. The aim of this paper is to analysation and rationalization the traffic flow of the intersection and roundabout to provide useful information for engineers to design the roads with the shortest travel time and reducing the congestion in roundabout and intersection.
The data required for the study were mainly collected through video filming technique .Also the calculation and assessment are constructed with the aaSIDRA software.