The Weakest Link: A Model of the Decline of Surface Transportation Networks
This study explores the economic mechanisms behind the decline of a surface transportation network, based on the assumption that the decline phase is a spontaneous process driven by decentralized decisions of individual travelers and privatized links. A simulation model is developed with a degeneration process by which the weakest link is removed iteratively from the network. Experiments reveal how the economic efficiency of a network evolves during the degeneration process and suggest an 'optimal' degenerated network could be derived during the decline phase in terms of maximizing total social welfare. Keywords: decline, transportation network, degeneration, welfare, accessibility
|Date of creation:||2007|
|Date of revision:|
|Publication status:||Published in Transportation Research part E 44 100-113, doi:10.1016/j.tre.2006.09.001|
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- David Levinson & Bhanu Yerra, 2006. "Self Organization of Surface Transportation Networks," Working Papers 200603, University of Minnesota: Nexus Research Group.
- Handy, Susan L., 1992. "Regional versus Local Accessibility: Variations in Suburban Form and the Effects on Non-Work Travel," University of California Transportation Center, Working Papers qt3rs4s3gc, University of California Transportation Center.
- David Levinson, 2003. "Perspectives on Efficiency in Transportation," Working Papers 200303, University of Minnesota: Nexus Research Group.
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