CoEXist: transport modelling software is now automated vehicle-ready

The CoEXist Project Team came together at the end of 2018 at the PTV Group headquarters.

Autonomous driving will fundamentally change our mobility in the future. The research project CoEXist, that PTV is involved in, aims at preparing the transition phase during which self-driving and conventional vehicles will co-exist on urban roads. End of November the project team met in Karlsruhe at the PTV headquarter, to discuss the status quo of the project. On this occasion the first big success could be announced. 

We have succeeded in making microscopic simulation software and macroscopic modelling software automated vehicle-ready”, explains Dr. Charlotte Fléchon from the PTV research Team. “This is an important milestone in the project and paves the way to AV-modelling.”

For 18 months PTV colleagues worked closely together with project partners from VEDECOM, Renault, TASS International and the University of Stuttgart. They were further supported by the Swedish national road and transport research institute, the city of Helmond in the Netherlands and the University of Florence.

Co-simulations were run – a connection between the control logic of VEDECOM, the software PreScan from TASS International and the microscopic simulation software PTV Vissim. Also, field data was collected in a real traffic environment on the test track in Helmond. Furthermore, the data and the car-following behaviour of the automated vehicles were analysed. Based on these results new features were released in PTV Vissim 11 and recommended values published. In addition, the results were used to develop scripts for macroscopic modelling by the University of Stuttgart.

Now that the modelling software is AV-ready, the four roads authorities involved in CoEXist will model their use cases using the microscopic simulation software PTV Vissim and the macroscopic modelling software PTV Visum. The results of the city of Helmond, Gothenburg, Milton Keynes, and Stuttgart are greatly anticipated.

Through making modelling software ready for automated vehicles one of three important project steps was achieved. Now the CoEXist team will tackle the automation-readiness of road infrastructure and authorities to increase the capacity of local authorities and other urban mobility stakeholders to get ready for the transition towards a shared road network.


The project CoEXist funded by the Horizon 2020 framework program of the European Commission focuses on the interaction between semi-automated and conventional vehicles in the transitional period to fully autonomous vehicle fleets.

Project duration: May 2017 – April 2020

Read more: EU research project CoEXist: Kick-off in Versailles in early June