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dmrb volume 6 section 3 part 5 - td 51/03 - Department for Transport

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DESIGN MANUAL FOR ROADS AND BRIDGES<br />

THE HIGHWAYS AGENCY<br />

SCOTTISH EXECUTIVE<br />

WELSH ASSEMBLY GOVERNMENT<br />

LLYWODRAETH CYNULLIAD CYMRU<br />

THE DEPARTMENT FOR REGIONAL DEVELOPMENT<br />

NORTHERN IRELAND<br />

TD <strong>51</strong>/<strong>03</strong><br />

Segregated Left Turn Lanes and<br />

Subsidiary Deflection Islands at<br />

Roundabouts<br />

Summary: This document sets out the design standards, methodology and good design<br />

practice <strong>for</strong> the provision of segregated left turning lanes and subsidiary<br />

deflection islands <strong>for</strong> trunk road roundabouts. Measures to ensure safe<br />

operation <strong>for</strong> all road users are described.

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