Chamäleon - Adaptive ITCS-coupled traffic signal control to improve the quality of traffic in Leipzig

Project manager: Dipl.-Ing. Django Adam

Project duration: 2012 -

External project partners: Stadt Leipzig, Leipziger Verkehrsbetriebe GmbH, Siemens Mobility GmbH, VerkehrsConsult Dresden-Berlin GmbH, SWARCO Traffic Systems GmbH, INAVET GmbH

Brief description: Within the framework of the Chamäleon project, tools and methods are being made available through the development of a new technical and technological approach that will enable effective and demand-oriented acceleration and quality improvement in public transport, taking into account operational concerns and the interests of other road users.

For the realization, a previously non-existent coupling of data of the computer-aided operations control system of the LVB (e.g. timetable situation) with the control computers of the traffic signal systems, which in turn are increasingly networked with the traffic management center of the city of Leipzig, became necessary. The direct exchange of data between these control systems, which until now have operated largely autonomously, enables the use of innovative model-based (adaptive) control approaches.

In particular, the Chamäleon project will link telematics applications for private and public transport, which has not been done before, at their decisive point, the road junction controlled by traffic lights as the place where the two types of traffic often meet in conflict. Within the framework of this symbiosis, the overall traffic quality at the intersection can be sustainably improved. The driver assistance system can support the streetcar drivers with regard to the optimal arrival time and energy-saving driving methods when approaching the junction. On the one hand, this keeps public transport interventions at the junction to a minimum, and on the other hand, traction energy can be saved.

By successively expanding the system, the initial selective effect can be strengthened, resulting in line-related positive effects that contribute to making public transport more attractive.