Pollution d’origine routière et environnement de proximité

Abstract

Exhaust gaz emissions, vehicle, pavement and equipement wears are sources of chronic pollution in road environment. Dry and wet atmospheric deposits and road runoff transfer pollutants from road network to its vicinity, potentially impacting superficial waters groundwater, atmosphere, soil and vegetation. The environmental balance of this pollution (sources, transfer, impact) has been documentated since the eighties. On the basis of this knowledge, methodologies have been deelopped and help to implement public policies relative to road networks. In France, the scientific and technical network of the Ministry in charge of transports (present Ministry of Ecology, former Ministry of Equipment) has realised a large part of this work involving researchers, technicians and road network stakeholders. This article aims at illustrating researches and associated methodological developments performed from last 30 years.

Keywords

• heavy metals
• road network
• vegetation
• atmosphere
• chronic pollution
• road runoff waters