Technical development in the field of vehicle automation is progressing rapidly, enhancing the expectation that connected and automated transport systems (CATS) will be introduced in increasing numbers over the next decade. The foreseen implementation of CATS has raised high expectations in terms of safety, environment, society and economic growth. The Horizon2020 project Levitate will investigate the potential impacts of CATS, through an innovative multi-disciplinary impact assessment framework and will incorporate the method within a new web-based policy support tool to enable city and other authorities to forecast impacts of CATS on urban areas. The objective of this study is to provide a review of future impacts of CATS, throughan extensive targeted review of recent literature on the impacts of connected and automated urban transport, passenger vehicles and freight transport, as well as a comprehensive analysis build on the knowledge gained through existing European level research.