WEATHER AND DRIVING SPEEDS: LONG-TERM STUDY ON A MAIN ROAD

SAAN JA KELIN VAIKUTUS AJONOPEUKSIIN: PITKAAIKAISSEURANTA VALTATIE

This article reports on a system for long-term collection of both speed and vehicle-type data developed at the Traffic Research Unit, University of Helsinki. Using inductive loops, the system is capable of classifying vehicle types correctly in about 95% of cases, and is capable of storing speed, time headway and type data for each individual vehicle for periods of several weeks unattended. Maximum speed decrements were about 20% below the normal level. Additionally, some decrease in traffic volume with respect to typical figures, maximum 17%, was also found during week-ends, connected with fog and other adverse weather conditions. (TRRL)

  • Corporate Authors:

    Finnish Road Association

    Vironkatu 6
    00170 Helsinki 17,   Finland 
  • Authors:
    • SUMMALA, H
  • Publication Date: 1984

Language

  • Finnish

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 52-56
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00399845
  • Record Type: Publication
  • Source Agency: VTT Technical Research Centre of Finland
  • Files: ITRD, TRIS
  • Created Date: Aug 25 2004 2:46AM