This webinar, organised by the Normandy-Centre Cerema (French Centre for studies and expertise on risks, environment, mobility and land use planning) as part of its technical territory conferences, brought together on November 16th over 50 participants, elected officials and technical staff from local authorities, the state and public bodies. Worksites for terrestrial transport infrastructures are a source of many disturbances and pollutions: occupying public space, generation of dust, vibrations, odours… To better limit their impact, it is essential to anticipate them.