Data collection procedures used in a study of the effect of long vehicles in the traffic stream

The experimental and data reduction techniques used in a study of overtaking behaviour and gap acceptance are documented in this report. This study had the broad objective of determining the effects of long vehicles in rural traffic streams. Motorists, unaware that their behaviour was being observed, overtook the test vehicles which were driven along two way two lane rural roads in Australia. The test vehicles were either 5,16,18,20 or 21m long. Instrumentation in test vehicles included a radar speed meter, a clock, a speedo odometer, and a video system which provided views forward, rearward and to right of the test vehicle. The data was recorded on video tape. The parameters obtained in the data reduction stage include: overtaking times and distances; safety margins; rejected and accepted gaps; overtaking and oncoming vehicle speed and overtaking type descriptions. The likely errors of measurement are also discussed. Finally, the report documents the number of overtakings of a particular type recorded for further analysis.

  • Record URL:
  • Corporate Authors:


    Melbourne, Victoria  Australia 
  • Authors:
    • Troutbeck, R J
  • Publication Date: 1978-5


  • English

Media Info

  • Pagination: 37P
  • Serial:
    • Issue Number: AIR 197-4

Subject/Index Terms

Filing Info

  • Accession Number: 01440632
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 24 2012 11:04PM