THE MEASUREMENT OF DRIVING TASK DEMAND

Thesis was submitted in partial fulfilment of the requirements for admission to the degree of doctor of Philosophy, Department of Civil Engineering, Melbourne University. The significance of driving task demand as a determinant of road traffic system performance was discussed in terms of its relationship to conventional indices of system operation such as 'level of service' and accident rate. Task demand was defined as that aspect of total workload which determines effort expenditure. The relative importance of task input load and operator characteristics were discussed, with particular attention to the roles of motivation, internal standards, performance strategies, incentive and perceived difficulty. It was concluded that both secondary task performance and subjective ratings are suitable for use in experiments to measure task demand and other 'human costs' of road system operation. Suitability of srr (steering wheel reversal rate) is doubtful, and its use would depend on the outcome of a further validation experiment. Mean measures of physiological arousal do not appear to warrant further use. (TRRL)

  • Corporate Authors:

    University of Georgia, Athens

    College of Business Administration
    Athens, GA  United States  30602
  • Authors:
    • MACDONALD, W A
  • Publication Date: 1979-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 260 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00309742
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Report/Paper Numbers: Thesis
  • Files: ITRD, TRIS, ATRI
  • Created Date: Jun 26 1980 12:00AM