In order to improve the knowledge of road users' perception of the various control techniques in the traffic system and its influence on behaviour, driver behaviour of passing private cars was studied at seven accident-prone road bends controlled differently. Systematic improvements of the existing control were then carried out in five of these bends and driver behaviour as regards degree and character of possible changes was then analysed. Generally, vehicle drivers in Sweden (=right driving) seem to increase the driving radius and speed by pulling to the right the closer they get to the centre of the bend. Similar displacement towards the left is noticed in lefthand bends. The greatest effect on behaviour is achieved by trying to inform the road user as early as possible of his/her (bad) speed adaptation or incorrect position in the bend by so-called feedback. Flashing lights installed on existing background markings have some effect. Lines with noise effects proved to be effective both as edge lines and in delineating traffic islands. In one case a recently installed warning sign seemed to contribute to higher driving speed through the bend.(a)

  • Availability:
  • Corporate Authors:

    Swedish National Road and Traffic Research Institute

    Drottning Kristinas Vaeg 25
    S-11428 Stockholm,   Sweden 
  • Authors:
    • NYGAARD, B
  • Publication Date: 1989


  • Swedish

Media Info

  • Pagination: 31 p.
  • Serial:
    • Issue Number: 558
    • Publisher: Swedish National Road and Transport Research Institute (VTI)
    • ISSN: 0347-6049

Subject/Index Terms

Filing Info

  • Accession Number: 00498192
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM