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Sökning: WFRF:(Tsanakas Nikolaos) > (2023)

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  • Tsanakas, Nikolaos, et al. (författare)
  • O-D matrix estimation based on data-driven network assignment
  • 2023
  • Ingår i: Transportmetrica B. - : Taylor & Francis Ltd. - 2168-0566. ; 11:1, s. 376-407
  • Tidskriftsartikel (refereegranskat)abstract
    • Time-dependent Origin-Destination (OD) matrices are an essential input to transportation models. A cost-efficient and widely used approach for estimating OD matrices involves the exploitation of flow counts from stationary traffic detectors. This estimation approach is also referred to as assignment-based OD matrix estimation because, typically, Dynamic Traffic Assignment (DTA) models are used to map the OD matrix to the link flows. The conventional DTA establish a complex non-linear relationship between the demand, and the link flows, adding an inherent complexity to the OD matrix estimation problem. In this paper, attempting to exploit the growing availability of Floating-Car Data (FCD), we suggest a solution approach that is based on a Data-Driven Network Assignment (DDNA) mechanism. The DDNA utilises the FCD from probe vehicles to capture congestion effects, providing a linear mapping of the OD matrix to the link flow observations. We present the results of two synthetic-data experiments that serve as proof of concept, indicating that if FCD are available, the computationally costly DTA may not be necessary for solving the OD matrix estimation problem.
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