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Particulate matter emissions from paved roads are currently one of the main challenges for a sustainable transport in Europe. Emissions are scarcely estimated due to the lack of knowledge about the resuspension process severely hampering a reliable simulation of PM and heavy metals concentrations in large cities and evaluation of population exposure. In this study the Emission Factors from road dust resuspension on a Mediterranean freeway were estimated per single vehicle category and PM component (OC, EC, mineral dust and metals) by means of the deployment of vertical profiles of passive samplers and terminal concentration estimate. The estimated PM₁₀ emission factors varied from 12 to 47 mg VKT⁻¹ (VKT: Vehicle Kilometer Traveled) with an average value of 22.7 ± 14.2 mg VKT⁻¹. Emission Factors for heavy and light duty vehicles, passenger cars and motorbikes were estimated, based on …