APPLICATIONS OF ROAD GEOMETRY DATA FOR HIGHWAY SAFETY IN NEW ZEALAND

New Zealand's State Highways were surveyed in 1992 using the Road Geometry Data Acquisition System (RGDAS). This system collected data on horizontal and vertical alignment, gradient and crossfall. A number of initiatives have been developed that make use of this valuable data source. General crash risk relationships based on Poisson Generalised linear models have been developed that can identify the effect of changes to key geometric variables. Geometry data has also been combined with crash and traffic data to develop crash rates for various terrain situations. Speed profiles have been developed for highway strategic studies, enabling curves that are deficient to the surrounding road environment to be highlighted. Sight distances can be generated from the data to assist with the evaluation of passing lanes and no-overtaking areas. Road geometry data can also establish an appropriate curve advisory speed. These applications enable practitioners to be proactive in identifying and treating hazardous sections of highway. This paper describes these applications, through specific practical examples, and outlines potential future uses for road geometry data. (a) For the covering entry of this conference, please see IRRD abstract no. E200232.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0478206437
• Corporate Authors:

  Land Transport Safety Authority

  Level 4, 7-27 Waterloo Quay, P.O. Box 2840
  Wellington,   New Zealand 
• Authors:
  • Koorey, G
  • WANTY, D
  • Cenek, P
• Publication Date: 1998

Language

• English

Media Info

• Features: References;
• Pagination: p. 170-4
• Serial:
  • ROAD SAFETY RESEARCH, POLICING, EDUCATION CONFERENCE, 1998, WELLINGTON, NEW ZEALAND, VOL 1
  • Publisher: Land Transport Safety Authority

Subject/Index Terms

• TRT Terms: Conferences; Crashes; Databases; Geometric design; Highway curves; Passing; Safety; Traffic lanes; Visibility distance
• Geographic Terms: New Zealand
• ITRD Terms: 1643: Accident; 2872: Bend (road); 8525: Conference; 8614: Database; 2885: Layout; 8079: New Zealand; 1822: Overtaking; 1665: Safety; 2827: Traffic lane; 6793: Visibility distance
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00789962
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-478-20643-7
• Files: ITRD, ATRI
• Created Date: Apr 11 2000 12:00AM