During the assessment procedure of the Seine Valley Government-Regional Interregional Plan Contract (CPIER), the decarbonisation of transport, the resilience of infrastructure networks and adaptation to climate change were identified as actions to be focused on and strengthened. The present note aims to document the way people travel and how this is changing. It is one of the Seine Valley CPIER monitoring measures put in place via the collaboration of five urbanism agencies.
The Seine Valley territory has major multimodal infrastructures and exchanges between regions are a daily occurrence and on the increase, particularly for professional trips and access to work: between 2010 and 2021, the number of people working inter-regionally between Ile-de-France and Normandy increased by almost 14%. Based on the data available, the study looks at home-work mobility focusing particularly on the inter-regional flow, current trends to decarbonise road transport, and the alternatives to travelling by car on offer such as by rail and coach.