UPPER (Urban Policies for Sustainable Mobility and Energy Resources) is a European project aimed at promoting sustainable urban mobility planning. The project involves 11 partner cities and regions from across Europe, and focuses on developing and implementing Sustainable Urban Mobility Plans (SUMPs) that incorporate sustainable energy policies. The project also aims to support the uptake of electric vehicles, and promote public transport and active mobility modes such as walking and cycling. The project partners share knowledge and experiences, and collaborate to develop best practices for sustainable mobility planning. The project is co-funded by the European Union’s Horizon 2020 research and innovation programme. Overall, the project seeks to contribute to a more sustainable and liveable urban environment, while reducing greenhouse gas emissions and air pollution.