The emissions measurement platform is located on the Nantes and Lyon campuses. Its purpose is to characterize the dynamics of emissions, as well as their physico-chemical nature. The pollutants considered are regulated and non-regulated compounds (heavy metals, rare earths, hydrocarbons, organic micropollutants) emitted in the gaseous or particulate phase. Both exhaust and non-exhaust pollutants are measured: from tires, road surfaces and brakes. Measurements are taken in the laboratory, on the track and on the road, as well as in the near-field using an ageing chamber. The scientific aim is to gain a better understanding of how emissions evolve according to vehicle driving and use, regulations, and modern emission reduction devices. The information obtained is useful for refining existing emission factors or proposing new, more realistic ones, for better understanding the formation of secondary particles, and for feeding air quality models. They will also be used to develop techniques for monitoring and reducing emissions at lower cost.