Publication: Comparing Traffic Performances Of Turboroundabouts And Conventional Roundabout (Case Study)
Date
2016-07
Authors
Izadi, Amir
Mirzaiyan, Danial
Rashidi, Abbas
Hosseini, Mohsen
Journal Title
Journal ISSN
Volume Title
Publisher
The Turkish Online Journal of Design Art and Communication
Abstract
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) [4]. 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[5].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.
Description
Keywords
traffic, turbo-roundabout, conventional roundabout