A simple detection scheme for delay-inducing freeway incidents

Wei Hua Lin, Carlos F. Daganzo

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

This paper describes a freeway incident detection scheme that does not rely on complicated theories. The procedure compares the occupancy information recorded by two neighboring loop detectors to determine whether an incident has occurred in the intervening segment, using a recipe that is directly related to an intrinsic property of delay-inducing incidents. The method, which can also signal the termination of a detected incident, assumes that any significant bottlenecks are located outside the segment in question; i.e. that the segment is "homogeneous". Independent of complicated theories, the proposed method can be applied with little calibration to any site despite the presence of detector errors and statistical fluctuations. It is also possible to use site-independent (default) parameters, although one should then expect a somewhat inferior performance. Tests with five sets of 30 s data from three different sites in the United States, Canada, and the Netherlands, using the recommended default parameters, were encouraging. The resulting graphical displays included in this paper clearly illustrate the scheme's effectiveness in distinguishing non-recurrent from recurrent congestion.

Original languageEnglish (US)
Pages (from-to)141-155
Number of pages15
JournalTransportation Research Part A: Policy and Practice
Volume31
Issue number2
StatePublished - Mar 1997
Externally publishedYes

Fingerprint

Highway systems
incident
Detectors
Display devices
Calibration
fluctuation
Netherlands
Canada
Incidents
performance

ASJC Scopus subject areas

  • Management Science and Operations Research
  • Civil and Structural Engineering
  • Transportation

Cite this

A simple detection scheme for delay-inducing freeway incidents. / Lin, Wei Hua; Daganzo, Carlos F.

In: Transportation Research Part A: Policy and Practice, Vol. 31, No. 2, 03.1997, p. 141-155.

Research output: Contribution to journalArticle

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