The TRL Annual Research Review 2011 contains a summary of the year’s activities and achievements. It includes an overview of TRL’s main research and consultancy highlights and a comprehensive listing of the reports and papers published in 2011. Included in this year’s Review is a section devoted to the fundamental research that TRL is undertaking, which is primarily aimed at developing the core skills, knowledge and processes that TRL anticipates will be needed in the
future. This research work is pursued through both internal and external funding.

Some selected full papers are also included as follows: Carbon aware travel choice for sustainable mobility by Anne Binsted, Anna Clark, Erel Avineri and Owen Waygood; Managing motorways from the roadside: investigating the feasibility of using verge-mounted variable message signs to implement Managed Motorways by Katharine Boddington, Paul Blakeman and Cyriel Diels; The influence of car registration year on driver casualty rates in Great Britain by Jeremy Broughton; Durability of thin surfacing systems after nine years’ monitoring by Cliff Nicholls, Ian Carswell and Donna James; The effects of increased police enforcement along a route in London
Louise Walter, Jeremy Broughton and Jackie Knowles.

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