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The internationally coordinated regulatory reuse of radio frequency bands poses the risk that the current analog radio-based communication basis for public transport priority at traffic signals will be lost. Since - independently of this - signal programs cannot always guarantee a stop-avoiding public transport clearance, especially in the case of competing applications, energy- and emission-minimized driving, which is required for climate protection reasons, requires the anticipatory transmission of LSA switching times to the driving personnel or to the driverless vehicles of the future. Within the scope of this project, both unsolved problems are to be addressed by using V2I (Vehicle to Infrastructure) communication technologies according to the ETSI ITS-G5 and ISO/TS 19091 standards.

Within the LOGIN project, a modular toolbox is being developed, , which provides solutions and tools at all levels involved (planning, design, pilot testing and regular operation), so that LSA and public transport operators can implement the most suitable components step by step and test them under practical conditions. The starting point and target areas of the research and development work are the state capital Hannover and the Hannover region with the public transport companies ÜSTRA and regiobus.

The Department of Traffic Engineering and Transport Logistics at the University of Kassel is pursuing the following goals within the LOGIN project:

• An experimental development platform based on a smartphone is to be developed for the realization of C-ITS functions and as an HMI (human-machine interface) to the driving personnel. This will be installed in light rail vehicles and buses and will cover the mobile part of the overall cooperative system.
• Novel signaling and driving strategies are to make the best possible use of the potential of V2I communication.
• The quality of switching time prediction is to be improved by a procedure for designing prediction-friendly signal programs.
• A simulation-based test environment in which real devices such as smartphones, roadside units (RSUs), and onboard equipment (OBEs) are taken into a "loop" is intended to facilitate both software development and the necessary functional tests prior to deployment in real road traffic, and to enable analysis of the traffic effects of different signaling and driving strategies.
• An evaluation will first determine the traffic potential based on simulations and then, during pilot operation, empirically determine the functional and traffic quality of the developed procedures and algorithms as well as the communication performance and stability of the overall system.