LENGTH OF TIME OF THE CONFLICT OBSERVATION PERIOD IN FIELD STUDIES

DE TIJDSDUUR VAN DE CONFLICTOBSERVATIEPERIODE IN VELDSTUDIES

In a number of field studies in which the conflict-observation method was used there was some doubt how long the observation should be continued. Two main problems were analyzed: (1) how long should an observation be made before casual as well as systematic fluctuations can be eliminated as much as possible (representative measuring period), and (2) how long should a period be to get a fair idea of the situation if the conflict observations are being carried out to make a diagnosis or to determine the effects of countermeasures in before and after studies. Specific questions also play a role. There is a difference depending on whether all conflicts at a junction or only driving to the left manoevres are to be evaluated. Methods used in different countries are discussed. (TRRL)

• Corporate Authors:

  Institute for Road Safety Research, SWOV

  Bezuidenhoutseweg 62
  The Hague,   Netherlands  2594 AW
• Authors:
  • KRAAY, J H
  • Oppe, S
• Publication Date: 1985

Language

• Dutch

Media Info

• Features: Figures; References; Tables;
• Pagination: 12 p.

Subject/Index Terms

• TRT Terms: Field studies; Methodology; Time; Traffic conflicts; Traffic surveillance
• Old TRIS Terms: Field observation
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00463239
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Report/Paper Numbers: NR-85-43
• Files: ITRD, TRIS
• Created Date: Mar 31 1987 12:00AM