This study aimed at giving a picture of the research that has been carried out on accidents in the dark, especially regarding the circumstances and situations in which the accidents occur and the relevant factors involved. The accident rate is much higher in the dark than in daylight. The severity of the accidents is higher and the accidents costs are higher in the dark than during daylight. Single vehicle and pedestrian accidents are especially usual in the dark. Young drivers have, relatively speaking, more accidents in the dark than in daylight in comparison to older drivers. Women have less accidents at night than men. Accidents in which the driver is alone in the car are somewhat more concentrated at night than accidents in which the driver is accompanied by passengers. Factors that strengthen the unfavourable influence that darkness has on traffic safety are road conditions and weather, alcohol and fatigue. Measures that have been undertaken to reduce the accident rate in the dark are mentioned; road lighting and reflectorized licence plates have positive effects. The risk for cyclists and pedestrians is larger in darkness than in daylight. /TRRL/

  • Corporate Authors:

    Swedish National Road and Traffic Research Institute

    Drottning Kristinas Vaeg 25
    S-11428 Stockholm,   Sweden 
  • Authors:
    • Widen, S
  • Publication Date: 1974


  • Swedish

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 82 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00096780
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Report 56 R&D Rpt.
  • Files: ITRD, TRIS
  • Created Date: Jul 15 1975 12:00AM