Road Traffic: A Major Source of Particulate Matter in Europe

Abstract

Gaseous and particulate emissions from vehicles represent a major source of atmospheric pollution in cities. Recent research shows evidence of, along with the primary emissions from motor exhaust, important contributions from secondary (due to traffic-related organic/inorganic gaseous precursors) and primary particles due to wear and resuspension processes. Besides new and more effective (for NO x emissions) technologies, non-technological measures from local authorities are needed to improve urban air quality in Europe.