In order to develop a “peaceful” metropolis, the Rouen Normandie Metropolis has developed a Master Plan for Active Mobility (SDMA) with the aim of promoting the practice of walking and cycling in daily travel, by taking these uses into account in all public space projects and arrangements, and by promoting a change in mobility behaviours. The bicycle development on the Boulevard de l’Europe, which is the subject of this dossier, is part of the N1 level structuring network. It is a question of creating a new secure cycle route on the left bank of Rouen, in a very dense urban space in order to promote daily commutes home-work, studies, leisure...