Technological change and the concentration of the US general cargo port system: 1970-88

Michael Kuby, N. Reid

Research output: Contribution to journalArticle

66 Scopus citations

Abstract

Using the Gini coefficient, we show that general cargo port traffic has become more concentrated from 1970 to 1988 because of four technological changes: containerization, larger ships, larger trains, and computerisation of freight tracking and billing. These four technological changes have spawned four kinds of intermodal services: microbridge, minibridge, landbridge, and round-the-world. Anticipated future technological innovations are expected to continue the concentration trend. In a methodological note, we show how the Gini coefficient will tend to underestimate system concentration in longitudinal studies of contracting systems, and we introduce a simple step that may be taken to avoid this error. -from Authors

Original languageEnglish (US)
Pages (from-to)272-289
Number of pages18
JournalEconomic Geography
Volume68
Issue number3
DOIs
StatePublished - Jan 1 1992

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Economics and Econometrics

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