ACCIDENT ANALYSIS OF TWO-LANE MAIN ROADS WITH A SPEED LIMIT OF 90 KM/H

EN OLYCKSANALYS AV TVAAFAELTIGA HUVUDVAEGAR MED HASTIGHETSBEGRAENSNING 90 KM/H

This report is a study of connections between: (1) paved width and traffic safety; (2) accident rate and traffic flow; (3) single and multi-vehicle accidents and traffic flow, paved width, alignment and region; (4) injury consequence (number of injured or killed per accident) and injury rate (number of injured or killed per vehicle mileage) and various road and traffic factors. Furthermore variations in accident costs are studied. There is a strong connection between accident rate and paved width, but it is not established that the accident rate is lower for a paved width of 12,7 M than for a width of 10,8 to 12,7 M. The relation between accident rate and adt is weak. As to the injury consequence, a correlation was established with the respective region, while a correlation was established with paved width and alignment as to the injury rate. Taking only single-vehicle and multi-vehicle accidents into account, no differences were found in the cost-of-accident index for different paved widths, alignments or traffic flows. However, basing the cost-of-accident index on all types of accidents, the cost-of-accident index will vary chiefly according to traffic flow and paved width. /TRRL/

• Corporate Authors:

  Swedish National Road and Transport Research Institute (VTI)

  Linköping,   Sweden  SE-581 95
• Authors:
  • BRUEDE, U
  • Larsson, Johan
• Publication Date: 1977

Language

• Swedish

Media Info

• Features: Figures; Tables;
• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Alignment; Correlation analysis; Costs; Crash investigation; Crash rates; Crashes; Highway safety; Highways; Injuries; Mathematical analysis; Pavements; Regions; Single vehicle crashes; Speed limits; Traffic flow; Two lane highways; Vehicles; Width
• Uncontrolled Terms: One
• Geographic Terms: Sweden
• Old TRIS Terms: Pavement width
• ITRD Terms: 1643: Accident; 1612: Accident rate; 1057: Air transport network; 2894: Alignment; 6471: Analysis (math); 6527: Correlation (math, stat); 224: Cost; 2755: Highway; 2163: Injury; 9054: One; 378: Region; 8109: Sweden; 671: Traffic flow; 6479: Width
• Subject Areas: Data and Information Technology; Finance; Highways; Pavements; Safety and Human Factors; Vehicles and Equipment; I81: Accident Statistics; I82: Accidents and Transport Infrastructure;

Filing Info

• Accession Number: 00178556
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: VTI Report No 55
• Files: ITRD, TRIS
• Created Date: Sep 27 1978 12:00AM