PEAK SIDE FRICTION AND YAW RATE DURING SURVEY OF HUME HIGHWAY

Road alignment surveys with the ARRB Road Geometry Survey Vehicle record the actual survey travel speed along with the alignment parameters of grade, vertical and horizontal curvature, cross-slope and distance travelled. The vehicle travels at normal traffic speeds. Thus the side friction demand and yaw rate can be calculated at any point after the survey is completed. The peak values of side friction and yaw rate at each recorded speed value have been obtained from a recent survey of the Hume Highway, covering 1700 km. The side friction values obtained support the values proposed in the NAASRA Interim guide to the Geometric Design of Rural Roads and cast doubt on the relevance of older side friction relations used in the past. The peak yaw rates suggest a linear relation with speed. It is suggested that recent changes in vehicle design may have changed the relevance of friction demand to the average Australian driver.

• Record URL:
  • http://arrbknowledge.com
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00050164
• Supplemental Notes:
  • Technical Note No. 1.
• Corporate Authors:

  ARRB

  Melbourne, Victoria  Australia 
• Authors:
  • Rawlinson, W R
• Publication Date: 1987-6

Media Info

• Features: Figures; References;
• Pagination: p. 129-131
• Serial:
  • Australian Road Research
  • Volume: 17
  • Issue Number: 2
  • Publisher: ARRB
  • ISSN: 0005-0164

Subject/Index Terms

• TRT Terms: Alignment; Geometric design; Highway curves; Highways; Rural highways; Slopes; Speed; Traffic flow; Vehicle design; Yaw
• Uncontrolled Terms: Grades
• Old TRIS Terms: Side friction, traffic flow
• Subject Areas: Design; Highways; Operations and Traffic Management; Planning and Forecasting; I21: Planning of Transport Infrastructure; I73: Traffic Control;

Filing Info

• Accession Number: 00475097
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Nov 30 1987 12:00AM