PHOEBE presents an outline of its tasks, aims and objectives in the following paragraphs. In case you would like to gain further insights into a specific aspect of our work, PHOEBE recommends you to visit our project library.

Creating a ‘PHOEBE framework’

PHOEBE assesses existing frameworks, liaises with transport managers to assess their needs and develops the theoretical concepts that determine the technical aspects for demonstration of the ‘PHOEBE framework’. This task includes the definition of theoretical principles and methodological processes for modelling mode shift and induced demand for new transport modes. The concept of the ‘PHOEBE framework’ defines the general conditions of the project, sets limits of the scope of the pilots and highlights the opportunities of the safety assessment tools of iRAP and Aimsun.  

Data collection and machine learning

PHOEBE evaluates its data requirements to be able to conduct the pilot activities and compares these requirements to the actual datasets that are available in the three pilots of Athens, Valencia and West Midlands. In a second step, the gathered datasets will be refreshed and updated to support model development and the previously mentioned use case demonstrations, which includes over 140  types of data. 

Model development to enhance urban road safety  

PHOEBE combines various models to create the ‘PHOEBE framework’. These models enhance existing road safety assessment frameworks and traffic simulation tools. Furthermore, they include human behaviour, mode shift and induced demand modelling to measure the impact of  physical or regulatory changes in the simulation scenarios. The development models are refined and improved, once the results of the use case implementations from the three pilots are available. Largely, the integration of the newly developed models will help to improve modelling capability, prioritising road user safety and vulnerable road users.

Use case implementation

PHOEBE needs to test its models by setting up demonstration pilots to test the modelling and simulation that was done in previous tasks, as well as by consulting local stakeholders in the framework of various workshops. A dedicated group of stakeholders will guide the selection of modelling scenarios. Additionally, discussions take place on how potential models can help to improve the local transport policy and safety objectives for vulnerable road users. This is also the moment when the created PHOEBE models are supplied with local data related to traffic levels (rush hours), weather conditions, as well as other traffic scenarios and local challenges. 

Systems integration and tool finalisation 

Based on the previous assessment of the pilots, different scenarios are created for each pilot that include potential safety measures related to infrastructure investments, related benefits (reduced injuries, saved lives etc.). The combined results  are used to refine and consolidate the PHOEBE framework theoretical principles and methodology. This is followed by the tasks related to the finalisation of the tool that will allow external experts to utilise the PHOEBE algorithms and planning solutions, which requires an accessible user interface.