An effort to assess the various economic impacts of vehicle restrictions and transit incentives in an urban setting by using a dynamic, interactive simulation model is discussed. The Manhattan central business district (CBD) serves as a focus for the modeling effort. The transportation actions studied are strategies proposed for the local transportation control plan, as required for New York City and most urban areas under the Clean Air Act of 1970. Changes to the CBD business sector (volume of business and employment), the transportation sector (vehicle volumes and mode splits) and the residential sector are studied. The model, which uses the Dynamo structure, is dependent on key simplifying assumptions joined in a feedback relationship in such a way that the effects on one sector influence changes in another. The model finds that the traffic-reduction strategies accomplish their goals only at the expense of economic well-being and that transit inducements alone have the snowballing effect of increasing business and vehicle activity in the CBD. However, combining vehicle-restraint policies with transit inducements can relieve congestion, primarily through modal shifts rather than reduced customer activity, so that the economic consequences are less onerous. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 19-23
  • Monograph Title: Economic and social aspects of transportation
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00319378
  • Record Type: Publication
  • ISBN: 0309030560
  • Files: TRIS, TRB
  • Created Date: Oct 27 1981 12:00AM