Incident indicators for freeway traffic flow models
Journal article, 2022
capable to capture abnormal traffic condition like accidents. Second, by means of proper real-time estimation technique, observing accident related parameters, one may even categorize the severity of accidents. Hence, in this paper, we suggest to modify the nominal Aw-Rascle (AR) traffic model by
a proper incident related parametrisation. The proposed Incident Traffic Flow model (ITF) is defined by introducing the incident parameters modifying the anticipation and the dynamic speed relaxation terms in the speed equation of the AR model. These modifications is proven to have physical meaning.
Furthermore, the characteristic properties of the ITF model is discussed in the paper. A multi stage numerical scheme is suggested to discretise in space and time the resulting non-homogeneous system of PDEs. The resulting systems of ODE is then combined with receding horizon estimation methods
to reconstruct the incident parameters. Finally, the viability of the suggested incident parametrisation is validated in a simulation environment.
Aw-Rascle model
PDE
multi stage numerical scheme
traffic accidents
moving horizon
Macroscopic traffic flow models
ODE
Author
Azita Dabiri
Delft University of Technology
Balázs Adam Kulcsár
Chalmers, Electrical Engineering, Systems and control
Communications in Transportation Research
27724247 (eISSN)
Vol. 2 December 100060PUCE: Protecting vulnerable road Users exposed to Contagion sprEad in public transit systems during and aftermath of a pandemic
Chalmers (PUCE), 2021-01-01 -- 2022-12-31.
AoA Transport Funds (PUCE), 2021-01-01 -- 2022-12-31.
Areas of Advance
Transport
Subject Categories
Transport Systems and Logistics
Control Engineering
DOI
10.1016/j.commtr.2022.100060