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

Project manager: Dipl.-Ing. Susanne Wunsch

Project duration: 2012 - 2024

Project partner:

• City of Leipzig
• Leipziger Verkehrsbetriebe GmbH
• Siemens Mobility GmbH
• VerkehrsConsult Dresden-Berlin GmbH
• SWARCO Traffic Systems GmbH
• INAVET GmbH

Motivation: As part of the Chamäleon project, a new technical and technological approach is being developed to provide tools and methods that enable effective and demand-oriented speeding up and quality improvement in public transport, taking into account operational concerns and the interests of other road users.

Implementation:

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

The driver assistance system can support the tram 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.