Freeway traffic incident reconstruction – A bi-parameter approach
Journal article, 2015

The paper suggests a novel alternative to generalized traffic incident descriptions within the macroscopic traffic model framework. The contribution of the paper is twofold. First, by extending already existing second order macroscopic conservation laws to characterize off-nominal traffic conditions, we define two main incident parameters such as direct and indirect ones. Physical interpretations of this incident parametrization is provided. These incident indicators are relative in view of the nominal traffic flow model parameters and carries physically meaningful macroscopic content. Second, the paper proposes to use a constrained and nonlinear, joint traffic state- and incident parameter reconstruction method and validates the suggested modeling idea via real traffic measurements fitting. Evaluation of the numerical results demonstrate the effectiveness of the methodology.

Second order traffic flow models

Direct and indirect incident parameters

Traffic incidents

Freeway traffic modeling

Moving horizon algorithm


Azita Dabiri

Chalmers, Signals and Systems, Systems and control, Automatic Control

Balázs Adam Kulcsár

Chalmers, Signals and Systems, Systems and control, Automatic Control

Transportation Research, Part C: Emerging Technologies

0968-090X (ISSN)

Vol. 58 585-597

Areas of Advance


Subject Categories

Transport Systems and Logistics

Control Engineering



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