Three-Laning a Two-Lane Roundabout - The Outcomes

Aerial photograph of road

Abstract

Using aaSIDRA (SIDRA INTERSECTION) software, VicRoads engineers redesigned a highly congested two-lane roundabout in Melbourne, Australia as a three-lane roundabout eliminating persistent congestion. Detailed field surveys were conducted before and after the reconstruction. This article presents detailed information about this study.

Reference

O'BRIEN, A., AKÇELIK, R., WILLIAMSON, D. and PANTAS, T. (1997). Three-Laning a Two-Lane Roundabout - The Outcomes. Paper by O'BRIEN, A., AKÇELIK, R., WILLIAMSON, D. and PANTAS, T. Compendium of Technical Papers (CD). 67th Annual Meeting of the Institution of Transportation Engineers, Boston, USA, (1997).