Traffic management and traffic information
Traffic monitoring and supervision
The idea behind the MatriX system is to use several means of data sources in a multi-modal transport model in order to predict the traffic and control it the best way possible. The system is also connected to automatic or operator control applications on speed advice and traffic signals. Such information is very useful as input to the MatriX model.
The measure originates from earlier EU-projects (partly “Quartet plus” and “Cleopatra”) and a lot of knowledge is re-used. The activities Stockholm has dealt with are adoption, calibration and validation of its operation in the Stockholm environment.
One of the most important data sources for covering a large road net with real time data are the GPS-equipped floating cars that reports its speed and position. This information will then be matched into a section in the non-equipped part of the road network. This seems to be a very efficient way to cover large road networks without huge investments in detection infrastructure. The floating cars, or probes, are implemented in a way where for example a transport company can obtain other positive effects by using the positioning information in a win-win-situation.
For the major steps (implementation of the model and sub-tasks as validation of data, adaptation of the model for Stockholm conditions, calibration etc) one database server, two application servers and one workstation is used.
For more information se Evaluation Report WP11
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