SUMMARY Research, development and consultancy projects undertaken by Akcelik & Associates since 1999 (other than software development projects) include the following. Various articles and reports based on these projects are available from our Downloads page. Performance of Roundabouts With Metering Signals (major research project for VicRoads). Investigation of Alternative Models for Roundabout Capacity Estimation. Speed - Flow and Bunching Models for Uninterrupted Flows. Revision of AUSTROADS Guide to Traffic Engineering Practice Part 6 - Section 3 (Performance of Roundabouts). Revision of...