The aims of this review were to: a) identify and assess significant trends in m25 traffic; b) specify points on the m25 and on immediately adjacent sections of the radial routes where delays are occurring, or are likely to occur as traffic increases; and c) to suggest measures to relieve such delays. The existing traffic flows on the m25 and associated radial routes in October 1987 are described. Recent historic trends in traffic growth both nationally and specific to the m25 are examined, and traffic demand forecasts are developed on a section by section basis. The method of obtaining observational data about traffic congestion on the m25 is described, and this data is presented on a section by section, time of day, day of week, occasional and typical basis. The latest available accident figures are also presented and accident clusters located. Various methods for reducing congestion are suggested and discussed, including traffic management measures, road widening options, and orbital road improvements. The opportunities for tolls and private finance in relation to the major improvements required are also discussed, as are highway maintenance operations, and the planning and administration of improvement schemes.

  • Availability:
  • Corporate Authors:

    Her Majesty Stationary Office

    49 High Holborn
    London WC1V 6HB,   England 
  • Publication Date: 1989


  • English

Media Info

  • Pagination: n.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00498909
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 0-11-550915-1
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM