ANALYSIS OF MEAN FREE SPEEDS ON AUSTRALIAN TWO-LANE RURAL HIGHWAYS

Data from four Australian state road authorities are analysed to determine relationships between mean free (spot) speeds on tangent lengths and the road factors, gradient, sight distance, pavement width and shoulder width. Such relationships are important in both road design and road safety. The analysis shows that gradient is the dominant factor influencing mean free speeds; it is probably the only significant factor as there is little evidence for any sight distance effect and no evidence of pavement width or shoulder width effects. /Author/ /TRRL/

  • Availability:
  • Corporate Authors:

    ARRB Group Ltd.

    Vermont South, Victoria  Australia 
  • Authors:
    • Troutbeck, R J
    • Cowley, J E
  • Publication Date: 1976-1

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00145301
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 0-909996-84-9
  • Report/Paper Numbers: Rpt. No.42
  • Files: ITRD, TRIS, ATRI
  • Created Date: Apr 13 2003 12:00AM