ROUNDABOUT AS AN ATERNATIVE FOR SIGNALIZED INTERSECTION AT SITRA JUNCTION, COIMBATORE (EAST)

The roundabouts are a kind of intersection that is characterized by an especial geometry derived on the way their branches are communicated by a ring-shaped road where circulation is established in one-way, rounding a central obstacle. Traffic conflicts at sitra junction increases due to rapid growth of city and due to development of colleges, hospitals, international airport, etc. So to overcome the problems in signalized intersections an roundabout is designed according to IRC standards. By providing roundabouts the travelling comfort is made better and more consistent as there is no need to stop for crossing traffic at intersection. Pedestrian bridge is provided to separate the road users and pedestrians using the intersection. Since the speed is slow at roundabouts the accidents rate reduces and there is no need of implementing traffic signals to control the vehicle movements. The roundabouts are economical in aspects of design and construction and they reducing pollution from stopping vehicles. Keywords—Roundabouts, Pedestrian bridge, accident, intersection, Traffic