This paper describes a three-phase analysis of the role of interpersonal factors in carpooling. Phase 1 utilized laboratory simulation methods in which respondents rated the relative desirability of alternative carpool descriptions. The main finding was that carpooling decreased in desirability as the number of nonacquaintances in the pool increased, with particularly low ratings being given to carpools with all nonacquaintances. Phase 2 consisted of an analysis of attitudinal and behavioral data from an existing industry-based carpool promotional program using FHWA matching techniques. Survey data obtained from 1,325 employees confirmed the importance of acquaintanceship as a factor in carpooling. Thirty-five percent were carpooling. However, only 15% of these carpoolers were unacquainted with their fellow carpoolers before the pools were formed, and most carpools were apparently formed on the basis of informal acquaintanceship networks. Of the noncarpoolers who expressed an interest in carpooling, the primary reason for not having joined a carpool was lack of personal contact with other potential carpoolers. Phase 3--which is now in progress--involves utilization of the findings from Phases 1 and 2 to design and implement promising strategies for promoting carpooling. In particular, strategies will be evaluated that stress person-to-person contact between potential carpoolers and utilize existing acquaintanceship networks to increase the number of carpools. Evaluation of such strategies should be useful in formulating future carpool promotional programs. /Authors/

  • Supplemental Notes:
    • This paper submitted for presentation at the Annual Meeting of the Transportation Research Board, Washington, D.C., January 1979.
  • Corporate Authors:

    University of Iowa, Iowa City

    Institute of Urban and Regional Research
    Iowa City, IA  United States  52242
  • Publication Date: 1978-7

Media Info

  • Features: References; Tables;
  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188440
  • Record Type: Publication
  • Source Agency: University of Iowa, Iowa City
  • Report/Paper Numbers: Tech. Report 101
  • Contract Numbers: DOT-7-3-0072
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM