Latest Evidence on Factors Impacting Road Traffic Growth

An Evidence Review

Published in: gov.uk/Department for Transport (2018)

Posted on RAND.org on November 28, 2018

by Charlene Rohr, Bryan Whittaker, James Fox, Julian Glenesk, John J. Collins

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The aim of this rapid evidence assessment review was to update evidence collected in 2014 (referred throughout as the '2014 Review') on traffic growth trends and factors driving these trends to inform the development of the second Road Investment Strategy (RIS2), covering investment in the English strategic road network between 2020 and 2025. Its specific aim was to identify and present findings covering the extent to which technological, social, economic, demographic, political, geographical and environmental changes have affected car usage and ownership. By car usage we specifically mean the impacts on car ownership and use. A secondary aim was, where evidence exists, to explore why a particular factor is important; for example, if an identified factor is that young adults are delaying licence acquisition and car ownership relative to young adults a decade ago, what the reasons are behind this.

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