Towards data-driven car-following models

Vasileia Papathanasopoulou, Constantinos Antoniou

Research output: Contribution to journalArticlepeer-review

111 Scopus citations

Abstract

Car following models have been studied with many diverse approaches for decades. Nowadays, technological advances have significantly improved our traffic data collection capabilities. Conventional car following models rely on mathematical formulas and are derived from traffic flow theory; a property that often makes them more restrictive. On the other hand, data-driven approaches are more flexible and allow the incorporation of additional information to the model; however, they may not provide as much insight into traffic flow theory as the traditional models. In this research, an innovative methodological framework based on a data-driven approach is proposed for the estimation of car-following models, suitable for incorporation into microscopic traffic simulation models. An existing technique, i.e. locally weighted regression (loess), is defined through an optimization problem and is employed in a novel way. The proposed methodology is demonstrated using data collected from a sequence of instrumented vehicles in Naples, Italy. Gipps' model, one of the most extensively used car-following models, is calibrated against the same data and used as a reference benchmark. Optimization issues are raised in both cases. The obtained results suggest that data-driven car-following models could be a promising research direction.

Original languageEnglish
Pages (from-to)496-509
Number of pages14
JournalTransportation Research Part C: Emerging Technologies
Volume55
DOIs
StatePublished - 1 Jun 2015
Externally publishedYes

Keywords

  • Car-following models
  • Data-driven approaches
  • Gipps' model
  • Intelligent transportation systems
  • Locally weighted regression (loess)
  • Machine learning methods
  • Optimization
  • Speed estimation

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