In its first part, this paper compares the effects of two sources of error on the results of "all-or-nothing" assignment to public transport networks: - the behavioural hypotheses concerning the choice of route by an individual trip maker, and - the spatial aggregation problem which is tightly linked to the simulation of the network access. In the second part we analyse the accuracy of the behavioural hypotheses, mentioned above, for different groups of trip makers: sex and age of travellers and purpose, mode (bus, metro, metro-bus) and complexity of trips. This research was based on an empirical study using trip data provided by an o/d survey carried out in 1978 in the city of Montreal. The experiment consisted basically in comparing the "real schedules" (some 17000 morning peak individual trips) with the simulated ones provided by a minimum path algorithm. The main results obtained can be summarized as follows: - when the access problem is obviated (the access nodes of the "real schedule" are imposed to the "simulated schedule") the two types of paths match in 88% of the cases. - when the access to the network is simulated, a maximum of 40% of the simulated schedules match with the real ones. - no differences were detected in the behaviour of trip makers grouped by sex, age and trip purpose. - different behaviours were detected when trip makers were grouped by mode and trip complexity (number of public transport lines used for travelling between the origin and destination zones). (Author/TRRL)

  • Supplemental Notes:
    • Transport Planning Methods. Proceedings of Seminar N held at the PTRC Summer Annual Meeting, University of Sussex, England, 4-7 July 1983.
  • Corporate Authors:

    PTRC Education and Research Services Limited

    110 Strand
    London WC2,   England 
  • Authors:
    • De Cea, J
    • Chapleau, R
  • Conference:
  • Publication Date: 1983

Media Info

  • Features: References; Tables;
  • Pagination: p. 115-128

Subject/Index Terms

Filing Info

  • Accession Number: 00382853
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: Volume P243
  • Files: ITRD, TRIS
  • Created Date: Apr 30 1984 12:00AM