COMPARATIVE ANALYSIS OF DETERMINANTS OF MODAL CHOICES BY CENTRAL BUSINESS DISTRICT WORKERS

The role of individuals' perceptions and preferences in traveler decision making is a growing and active area of theoretical and empirical research. This study was designed (a) to quantify the relation between perceived system attributes and modal choice, (b) to compare the magnitude of this relation to that of the alternative relations of sociodemographic and network time and cost data and modal choice, and (c) to determine whether the linkage between perceived system attributes and modal choice is dependent on the relations of sociodemographic and network data to model choice. The sample was composed of Los Angeles central business district workers who live within approximately 3.2 km (2 miles) of a freeway that feeds radially downtown. Models were calibrated for three dependent-variable criteria; these were monthly differences in use for (a) automobile versus bus, (b) automobile versus car pool, and (c) bus versus car pool. The multiple coefficients of determinination for modal choice as a function of perceived system attributes were statistically significant at the 0.001 level for all dependent-variable criteria. The coefficients ranged from 0.265 to 0.125, but the analogous coefficients for sociodemographic or planning data ranged from a low of 0.004 to a high of only 0.054. The effects of perceived system attributes on the dependent variables were not diminished by the other types of independent variables. Tests of significance for the individual components of combined models with these types of data showed the perceived-system-attribute data to be significant at beyond the 0.001 level in all cases. However, sociodemographic and network data appear to be influenced by the addition of perceived-system-attribute data to the degree of becoming nonsignificant in some cases. The overall conclusion is that perceived system attributes can be a statistically significant correlate of modal choice over and above any influence by network or sociodemographic variables or both. /Author/

Media Info

  • Media Type: Print
  • Features: References; Tables;
  • Pagination: pp 7-14
  • Monograph Title: Preferences, perceptions and market segments in travel behaviour
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00179380
  • Record Type: Publication
  • ISBN: 0309026784
  • Files: TRIS, TRB
  • Created Date: Aug 27 1978 12:00AM