Sirius Evaluation Project
Sirius Evaluation Project

Author:

Publisher:

Published: 1994

Total Pages: 16

ISBN-13: 9781895102536

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SIRIUS (Ssyteme d'Information Routiere Intelligible aux Usagers) is the largest urban field operational test of the advanced traveler information and automated traffic management system in Europe. With variable message signs, SIRIUS has been in operation in the Paris region since December 1992. This study is a preliminary investigation of the effectiveness of the SIRIUS system in traffic management. The concern of the paper is the extent to which motorists responded to real-time traffic information and the consequential changes in link flow under SIRIUS. Time-series traffic data were analyzed to evaluate cumulative arrival patterns at a selected link. The study suggests that there is evidence indicating variable message signs influenced drivers to take the less congested route. The cumulative arrival curves also suggest that diversion behavior is closely associated with the information about the level of congestion. the heavier the congestion the greater the motorists' response to the messages and this relationship is exponential. For the covering abstract of this conference, see IRRD number 863140.

Evaluation of Dynamic Message Signs and Their Potential Impact on Traffic Flow
Evaluation of Dynamic Message Signs and Their Potential Impact on Traffic Flow

Author: Ali Ebadollahzadeh Haghani

Publisher:

Published: 2013

Total Pages: 102

ISBN-13:

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Maryland State Highway Administration (SHA) has a rich data archive of the messages posted to the Dynamic Message Signs (DMS) and the time stamps when they were posted and taken down. The archive also contains traffic information surrounding the DMS signs, such as traffic volumes and speeds from various point or probe-based sensors. In this project, the research team used this data archive to study the impact of DMS messages on traffic conditions. Multiple Bluetooth sensors were deployed on a major travel corridor in the Baltimore Metropolitan Area to determine vehicle travel times and to monitor traffic diversions.