This paper was presented at Session 27 - Traffic Systems and analysis. The problem of whether two log-normal distributions of acceptance data are statistically similar or different is considered. In traffic engineering, the problem is whether gap acceptance data may be combined with lag acceptance data or whether they must be analysed separately. The methods used by previous researchers are reviewed. The statistical Welch t'-test is adapted to use acceptance data which have been analysed by the probit analysis technique. The method is explained and applied to data of a new study and two previous studies. Results support the need to treat gaps, delayed lags, and undelayed lags as separate data sets, as well as treating right-turn, left-turn, and through vehicle movements as separate data sets. (TRRL)

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: p. 61-68
  • Serial:
    • Volume: 9
    • Issue Number: 5

Subject/Index Terms

Filing Info

  • Accession Number: 00310393
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • Files: ITRD, TRIS, ATRI
  • Created Date: Jun 26 1980 12:00AM