Mesoscopic simulation of a dynamic link loading process

Hilmi Berk Celikoglu*, Mauro Dell'Orco

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40 Atıf (Scopus)


Passing from path flows to link flows requires non-linear and complex flow propagation models known as network loading models. In specific technical literature, different approaches have been used to study Dynamic Network Loading models, depending on whether the link performances are expressed in an aggregate or disaggregate way, and how vehicles are traced. When vehicle movements are traced implicitly and link performances are expressed in an aggregate way, the approach is macroscopic. When vehicle movements are traced explicitly, two cases are possible, depending on whether link performances are expressed in a disaggregate or aggregate way. In the first case, the approach is microscopic, otherwise it is mesoscopic. In this paper, a mesoscopic Dynamic Network Loading model is considered, based on discrete packets and taking into account the vehicle acceleration and deceleration. A simulation was carried out, first using theoretical input data to simulate over-saturation condition, and then real data to validate the model. The results show that the model appears realistic in the representation of outflow dynamics and is quite easy to calculate. It is worth noting that network loading models are usually used downstream of the assignment models from which they take path flows to calculate link flows. In the above mentioned simulation, we assumed that a generic assignment model provides sinusoidal path flow.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)329-344
Sayfa sayısı16
DergiTransportation Research Part C: Emerging Technologies
Basın numarası5
Yayın durumuYayınlandı - Eki 2007


The authors would like to thank to the anonymous referees and the corresponding associate editor, Hani S. Mahmassani, for their helpful comments and suggestions. This work was supported in part by the Scientific & Technological Research Council of Turkey (TUBITAK) under the grant number 2214, which is gratefully acknowledged.

FinansörlerFinansör numarası
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

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