AUTOMOBILE AVAILABILITY PER WORKER: A TRANSPORTATION-SYSTEM-SENSITIVE SOCIOECONOMIC VARIABLE (ABRIDGMNET)

The general objective of this research was to investigate the impact of a viable transit alternative on household decisions to have automobiles for use in making home-based trips. The specific objectives were to determine differences in automobiles available per worker (APERW) between households in areas served by transit and to recommend socioeconomic variables that appear to have high correlation and possible causal effects on APERW for consideration in travel demand models. The study was carried out in Laurel, Maryland, which has a population of 48,000 and an area of 23 sq km (9 sq mi) and is located approximately midway between Baltimore and Washington, D.C. The transit service hypothesized to influence APERW is an express commuter service operated by Greyhound from Laurel to Washington. Other transit service is provided to Washington by the B&O Railroad. Automobile competition with transit is substantial. One limited-access highway (Baltimore-Washington Parkway) and a primary highway (US-1) link Laurel with Washington. Ninety-two percent of all households in the study area were given a questionnaire to complete and return to convenient pick-up areas. In addition to socioeconomic and sociodemographic questions, respondents were asked to identify all work trips and the modes taken for all family members. The response rate was 4.2 percent. The finding of other studies, that the variable automobiles-available-per-worker is strongly related to mode choice, was corroborated. For work trips to Washington, the percentages carpooling or using transit greatly decreased with increasing automobiles available per worker.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 202-205
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00196015
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 15 1981 12:00AM