SAFETY AND CAPACITY OF MODERN ROUNDABOUTS

This article's aim is to spread out modern roundabout's internationally proved advantages in relation to safety, capacity, aesthetics, environmental impacts and costs, over other means of traffic control in at-grade intersections; particularly over the old traffic circles (rotary intersections). The main purpose is to promote: the use and design of modern roundabouts; the reconstruction of old traffic circles; the use of currently valid guidelines or standards for modern roundabouts design in other countries on highway safety; the update of obsolete design standards still in force in the Direccion Nacional de Vialidad and other Argentinian highway agencies, about rotary intersections as implicitly stated in the 1955 Traffic and Highway Safety Act. The traffic movement around a roundabout will be without interruption or stops and leaving the central area to the left. The right of way is given to the traffic flow in the circulatory roadway over all entering vehicles on the approaches, yielding the right of way to those going out, unless there is a contrary traffic sign.