Arising out of a study of rail conversion in the London area, the author has examined the scope for accomodating single carriageway two-lane roads within the width of about 8 metres required for a two-track railway. The paper summarises the results of that examination and provides a basis for discussing the feasibility and value of constructing roads to standards below those currently laid down by the UK Department of Transport. Although touching upon the physical constraints and problems inherent in converting railways to roads, the paper doe not aim at considering the merits of otherwise of rail conversion. After reviewing conventional requirements for the cross-sectional design of single carriageway roads in the UK, the paper discusses headroom standards; considers the implications of accidents, breakdowns and road maintenance on road design; looks at the design needs of bus-only roads; considers the capacity of narrow roads and summaries the conclusions. The paper focuses particularly on the design of urban roads to which access is limited. Other than in housing areas, the extent of experience in the UK with the design of a single carriageway roads with carriageways less than 7.3m wide is very limited. For the covering abstract of the proceedings see TRIS 450538. (TRRL)

  • Availability:
  • Supplemental Notes:
    • Proceedings of the Seminar M, Highway Appraisal and Design, Held at the 12th PTRC Summer Annual Meeting, University of Sussex, England, from 10-13 July 1984, Volume P255.
  • Corporate Authors:

    PTRC Education and Research Services Limited

    110 Strand
    London WC2,   England 
  • Authors:
    • PARKER, G B
  • Conference:
  • Publication Date: 1984

Media Info

  • Features: References; Tables;
  • Pagination: p. 31-41
  • Serial:
    • Volume: P249

Subject/Index Terms

Filing Info

  • Accession Number: 00450541
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 086050-140-X
  • Report/Paper Numbers: MONOGRAPH
  • Files: ITRD, TRIS
  • Created Date: Aug 27 2004 9:56PM