Authors: A Lewis Published: 05 Jul 2010


In this paper the author examines some inconsistencies which he has identified in the design of mini-roundabouts (TD54) compared to other technical directives in the Design Manual for Roads & Bridges which he believes require clarification. These inconsistencies affect the potential to safely apply relaxations and/or departures from standard and as a result the author encourages a formal review of the standards with a view to ensuring that designers are afforded appropriate flexibility to exploit the potential safety improvements achievable with mini-roundabouts.
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