DMRB Volume 6 Section 3 Part 5 (TD 51/03) Road geometry. Highway Features. Segregated left turn lanes and subsidiary deflection islands at roundabouts (including NRA addendum - July 2004)
Publication Year
2003
Document Status
Withdrawn
Abstract
Details are given for design standards, methodology and good design practice for provision of segregated left turning lanes and subsidiary deflection islands for trunk road roundabouts. Also covers the measures to ensure safe operation for all road users.
Document History
Withdrawn April 2017. Superseded by TII publications DN-GEO-03031 and DN-GEO-03060. NRA DMRB 6.3.5.
Publisher Information
National Roads Authority
The National Roads Authority's (NRA) primary function, under the Roads Act 1993, was to secure the provision of a safe and efficient network of National roads. They were responsible for the planning and supervision of construction and maintenance, publishing the NRA DMRB and NRA MCDRW. In 2016 the NRA merged with the Railway Procurement Agency (RPA) to form a new organisation, Transport Infrastructure Ireland (TII).
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