Financial Data

http://www.ist-rhythm.com/index.htm

Description

Key Words
motorway networks, traffic surveillance, extended Kalman filter, ramp metering, ALINEA, video sensors

Summary
Video sensors have proven advantages over point detectors (loops and radars) for various applications beyond the mere measurement of traffic variables, e.g. for incident detection. For the further deployment of traffic sensors, it is important to test their efficiency for specific surveillance and control tasks of practical importance, and to compare with loop-based and radar efficiency. The use and full exploitation of video-based information calls for suitable modifications or even complete re-design of available loop-based surveillance or control algorithms along with field application, demonstration, and comparative evaluation. The innovation of RHYTHM lies exactly in this design and field evaluation of algorithms while comparing results of both detection technologies. RHYTHM focuses on four tasks in the domain of traffic management:

Surveillance:
1. traffic state estimation/prediction;
2. queue tail tracking;
3. travel-time estimation/prediction;

Control:
4. isolated traffic-responsive ramp metering.

The final objective is to have an algorithm prototype for these 4 tasks. The algorithm will be developed at the Dynamic Systems and Simulation Laboratory of the Technical University of Crete and will be evaluated by use of microscopic simulation, as well as by field implementation in two sites: the A92 and A94 ring roads in Munich.