Model for accurate speed measurement using double-loop detectors

Yong Kul Ki, Doo Kwon Baik

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


Vehicle speed is an important parameter in measurements of road traffic. At present, double-loop detectors are generally used for vehicular speed measurement. However, these detectors incur errors caused by scanning time, spacing between double loops, irregular vehicle trajectories, and the presence of multiple vehicles in the detection zone. This paper suggests a new model that uses an error-filtering algorithm to improve the accuracy of speed measurements. In the field tests, all percent errors of the vehicular speeds measured by the proposed model were within the error tolerance limit (±5%). Furthermore, the variance of percent errors was reduced. Therefore, it can be concluded that the proposed model significantly improves vehicle-speed-measuring accuracy.

Original languageEnglish
Pages (from-to)1094-1101
Number of pages8
JournalIEEE Transactions on Vehicular Technology
Issue number4
Publication statusPublished - 2006 Jul


  • Double-loop detectors
  • Filtering algorithm
  • Irregular driving vehicles (IDVs)
  • Loop design
  • Multiple vehicles in the detection zone (MVDZs)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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