University of Twente Student Theses


The reconstruction of vehicle trajectories with dynamic macroscopic data

Krol, Lieuwe (2009) The reconstruction of vehicle trajectories with dynamic macroscopic data.

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Abstract:In recent years the calculation of emissions is becoming more important. The amount of emissions of traffic can be calculated using simulation models, to investigate ex-ante the effects of certain measures. Most of the appropriate models are microscopic simulation models. This type of models is vehicle based and is not able to consider large areas. Models which can consider large areas are not vehicle based. The outcomes of these models are averaged values for speeds and low rates. Literature shows that emission calculation with these averaged values is not accurate enough. Next to this, visualization of vehicle movements helps to understand the performance of a traffic system. Microscopic models are able to visualize the cars, while macroscopic models are unable to do that. On the other hand, microscopic models are stochastic models. Macroscopic models are, on the contrary, deterministic and able to calculate the traffic flows in larger areas. Therefore, in this research a method is developed which is able to combine the best of the two different models by reconstructing vehicle trajectories based on dynamic macroscopic data. This method makes it possible to visualize vehicle movements and to calculate emissions, while it is still macroscopic and deterministic.
Item Type:Essay (Master)
Goudappel Coffeng
Faculty:ET: Engineering Technology
Subject:55 traffic technology, transport technology
Programme:Civil Engineering and Management MSc (60026)
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