Verification of Austroads road design criteria based on objective safety evidence

This report provides a compendium of recent and robust evidence on the relationships between twenty key geometric design criteria and safety outcomes. The project critically reviewed quality research sources to identify crash modification factors (CMFs) for such road design criteria as horizontal curvature, lane and sealed shoulder widths, sag and crest design values and various longitudinal sight distance requirements. The review of findings by the Project Advisory Group, consisting of the Task Force members, largely resulted in verification of the current design criteria values as published in the Guide to Road Design Part 3: Geometric Design. The report highlights areas for further investigation to refine the current understanding or to enable economic appraisal of potential future changes. The study reviewed potential for detailed design applications of the Australian National Road Assessment Model (ANRAM) and Interactive Highway Safety Design Model (IHSDM) in Australia and New Zealand. The review found both to be feasible but requiring further adaptations. The report will assist Austroads Road Design Task Force in future review of Austroads road design guidance.

• Record URL:
  https://www.onlinepublications.austroads.com.au/items/AP-T320-17
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9781925451702
• Supplemental Notes:
  • Austroads Project TT1966
• Corporate Authors:

  Austroads

  Suite 2, Level 9, 287 Elizabeth Street, Sydney, New South Wales 2000, Australia
  Sydney, New South Wales   
• Authors:
  • Jurewicz, C
  • Makwasha, T
  • O'Callaghan, N
• Publication Date: 2017-5

Media Info

• Pagination: 49p

Subject/Index Terms

• TRT Terms: Evaluation; Geometric design; Highway curves; Highway design; Highway safety; Highways; Layout; Safety; Traffic safety; Visibility distance
• Uncontrolled Terms: Road design and asset management; Safe systems (roads)
• Geographic Terms: Australia; New Zealand
• ATRI Terms: Crash countermeasure; Curve; Evaluation; Geometric design; Road design; Road safety; Visibility distance
• ITRD Terms: 1661: Accident prevention; 2872: Bend (road); 9020: Evaluation (assessment)
• Subject Areas: Highways; Safety and Human Factors; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 01635201
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 9781925451702
• Report/Paper Numbers: AP-T320-17
• Files: ITRD, ATRI
• Created Date: May 24 2017 1:44PM