Are long commute distances inefficient and disorderly?

By joining ideas from the spatial interaction and excess commuting literatures, three related aspects of commuting statistics, trip length, distance decay, and entropy, were integrated and organized. Concepts and calculations from the excess commuting literature were used to improve interpretation of trip length parameters in a doubly constrained trip distribution model. A direct mathematical relationship was derived between trip length and entropy, thereby providing an analytical model to calculate the ease with which trip lengths might be reduced. The new analysis not only ties these statistics together in a mathematically useful way, but also allows for a new entropy metric- relative entropy- that determines the organization (or lack thereof) of aggregate work trips. As a result, the entropy component is disentangled from the distance component and new perspectives are offered on aggregate commuting in a comparative framework. Twenty-five cities are classified in an interesting and useful way that includes the average trip length and the degree of organization in each city

  • Availability:
  • Authors:
    • O'KELLY, M E
  • Publication Date: 2009-11


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01147118
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 24 2009 8:45AM