Local MAD method for probe vehicle data processing

This paper presents a local median absolute deviation (MAD) method to process travel times from raw probe vehicles data. The method is applied locally to each time window (band) with a fixed duration. To determine a proper band width, a sensitivity analysis is conducted to study how the band width impacts the performance of the method. The analysis reveals that if data samples are fairly large, a band width of 15-30 minutes can be chosen in order to capture the trend of travel times and the statistical rigor of the local MAD method. The method and the analysis presented in this paper are expected to provide some insights to practitioners who plan to use probe vehicle data for traffic analyses. For the covering abstract see ITRD E140665.

  • Authors:
    • YUWEI, L I
  • Publication Date: 2007-10


  • English

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Filing Info

  • Accession Number: 01148915
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jan 25 2010 9:01AM