Published in May 2018, Department for Transport’s ‘Latest Evidence on Factors Impacting Road Traffic Growth’ presents the findings of a rapid evidence assessment review to provide a better understanding of traffic growth trends, and factors driving these trends, to inform the development of the second Road Investment Strategy (RIS2). It follows a similar review conducted in 2014 and therefore focusses on evidence published since that review. While the focus of the study is on understanding factors influencing traffic growth trends in Britain, the evidence review incorporates European and wider international evidence, where relevant.