Publication: Comparing Traffic Performances Of Turboroundabouts And Conventional Roundabout (Case Study)
The Turkish Online Journal of Design Art and Communication
Research conducted by Yperman and Immers in 2003 shows that the new geometry of these roundabouts, limits ''wavelike-movements'' and by convincing the driver to use a maximum of 2 lines, provides increasing capacity from 12 % to 20 % in the rotation (island) . According to studies done on a especial case, by Lenin A.Bulla and William Castro, the results showed 7 % increase of capacity in Turbo-roundabouts in comparison with the typically roundabouts.In terms of capacity, the results are not consensual. Some authors, using simplified approaches, concluded that turbo-roundabouts offer better capacity than conventional roundabouts of similar size. The application of a new lanebased method reveals that only in very specific scenarios that are uncommon in real-world networks can a standard turbo-roundabout be expected to provide more capacity than the equivalent two-lane roundabout.
traffic, turbo-roundabout, conventional roundabout