The principal aim of WP4 is to quantify the effect of reducing vehicle emissions for each of the consumer behaviour measures and interventions assessed within the project and to extrapolate the observed effects for estimating the overall impact of the project for when the measures and interventions are rolled out more broadly. Furthermore, WP4 will provide a set of templates directed towards consumers, containing easy-to-understand information on which measures and interventions work best and how to implement them into daily use practices.