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:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0909996849
• Corporate Authors:

  ARRB

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

Language

• English

Media Info

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

Subject/Index Terms

• TRT Terms: Average travel speed; Highway design; Highway grades; Highway safety; Highways; Pavements; Rural areas; Rural highways; Slopes; Speed; Traffic lanes; Two lane highways; Visibility distance; Width
• Uncontrolled Terms: Free speed; Two
• Geographic Terms: Australia
• Old TRIS Terms: Pavement width
• ITRD Terms: 8006: Australia; 5409: Average speed; 2806: Gradient; 2755: Highway; 328: Rural area; 5408: Speed; 2827: Traffic lane; 9082: Two; 6793: Visibility distance; 6479: Width
• Subject Areas: Highways; Operations and Traffic Management; Pavements; Planning and Forecasting; I72: Traffic and Transport Planning;

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