Empirical description of car-following
Empirical description of car-following.
In: Traffic Granular Flow 2003 Proceedings.
Traffic And Granular Flow, 2003-09, Delft, Niederlande.
This contribution reports a recently recorded data-set that helps to
understand the car-following process better. Since the empirical basis of most traffic
flow models can be called weak, these findings may help to design better models.
They demonstrate, that the process of car-following seems to have a very interestic
stochastic dynamics. Especially, and different from most of the existing models the
data show clearly that car following cannot be described by a noisy fixed point
dynamics. This is because the acceleration of the cars is smooth and roughly constant
for a certain time, with fast changes to a new value at so called action points.
Furthermore, the data can be used for calibration and validation purposes of
the various models. This has been done with very interesting results indicating that
all the models tested behave very similar and cannot describe the data better than
with 15 % difference between models and data.
|Document Type:||Conference or Workshop Item (Paper)|
|Additional Information:||Invited presentation to the Traffic And Granular Flow conference|
|Title:||Empirical description of car-following|
|Authors||Institution or Email of Authors|
|Journal or Publication Title:||Traffic Granular Flow 2003 Proceedings|
|In ISI Web of Science:||No|
|Keywords:||calibration/validation, microscopic traffic flow models, phase transitions
in traffic flow|
|Event Title:||Traffic And Granular Flow|
|Event Location:||Delft, Niederlande|
|Event Type:||international Conference|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Transport|
|HGF - Program Themes:||other|
|DLR - Research area:||Transport|
|DLR - Program:||V VR - Verkehrsforschung|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Transport Research|
|Deposited On:||04 Jan 2006|
|Last Modified:||14 Jan 2010 20:34|
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