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Research Reports

Traffic Data Aquisition and Distribution (TDAD)

Description: The wide variety of remote sensors used in Intelligent Transportation System (ITS) applications (loops, probe vehicles, radar, cameras, etc.) has created a need for general methods by which data can be shared among agencies and users who own disparate computer systems. In this report, the authors present a methodology that demonstrates that it is possible to create, encode, and decode a self-describing data stream using the following: (1) existing data description language standards; (2) parsers to enforce language compliance; (3) a simple content language that flows out of the data description language; and (4) architecture neutral encoders and decoders based on ASN.1.

  • Date Published: May, 2002
  • Publication Number: WA-RD 484.1
  • Last Modified: May 15, 2007
  • Authors: Daniel J. Dailey, David Meyers, L. Pond, K. Guiberson.
  • Originator: Washington State Transportation Center (TRAC)
  • # of Pages: 75 p., 645 KB (PDF)
  • Subject: Advanced traveler information systems, Data collection, Data sharing, Self describing data, Standards, Traffic data.
  • Keywords: Travel time, data mine, decoding, encoding, JDBC (Java database connectivity), data user services, ADUS (advanced traveler information systems)
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This abstract was last modified April 29, 2008