Malaysia and like in many other countries, the road users are facing problems with congestion and road safety hazards. In urban areas roundabouts are becoming more popular like in Shah Alam but had experience difficulties due to many factors, among others such as driver characteristics, geometric design and others. Due to such factors, congestion is inevitable and at the same time it will reduce the safety of the drivers either at entry, exit or in weaving section of the roundabouts. This paper focuses on macroscopic assessment on conventional roundabout using traffic microsimulation software called Paramics. The finding discusses on the performance of the roundabout in term of level of service (LOS), lane occupancy delay and safety that related to the Malaysian Roundabout Geometric Design. However, the significance output from this research work shows that by introducing slight engineering design improvement, better performance and safety at the roundabout can be accomplished. (Author/publisher)
Abstract