Abstract
The ROMANSE Project, based on Southampton, UK, utilises route guidance Variable Message Signs (VMS) to disseminate traffic and travel information. Network monitoring data has been collected and stored, enabling a post-mortem analysis of driver response to VMS to be undertaken whenever a relevant major incident occurs. This paper describes the results from an incident that occurred on 27 March 2000 on Redbridge Causeway. Analysis of the traffic flow data observed an increase of approximately 1,000 vehicles on the diversionary route during the morning peak period. A traffic assignment model, RGCONTRAM, simulated the incident scenario offline and this diversion rate translates to network benefits of some 2,600 vehicle hours.