Analysis Of User Behaviour At A Roundabout
Under Car-following Conditions
Author(s)
G. Guido & A. Vitale
Abstract
Roundabout intersection planning in urban areas has spread remarkably,
especially in Europe. Compared with the conventional intersection layout, this
system is suitable for improving road safety and the urban landscape. In the
literature there are many studies regarding car-following models; the innovative
characteristic of this research is the analysis of user behaviour at a roundabout. In
fact, the main aim is to develop a car-following model allowing the definition of
flow conditions under high vehicular densities at this type of intersection. The
car-following model consists of a stimulus-response function; its calibration and
validation has been made by the analysis of many parameters influencing traffic
flow. These parameters have been observed with a video data acquirement
technique in order to minimize the distance between the observed variables and
the estimated one. Preliminary results show a strong correlation between the
observed behavioural parameters and the output of the model, forecasting
vehicular trajectories at a roundabout. The estimation of traffic parameters in
car-following condition is useful to define the geometry of the intersection
(length of weaving area, number of lanes, diameter, number of entries) and to
forecast conditions that could lead to behavioural anomalies connected with a
reduced safety level for users.
Keywords: driver behaviour, roundabout, car-following, model.
1 Introduction
The conditions of circulation on the road network have never been more
important, above all in the urban context. In fact, vehicular traffic congestion
produces increasingly frequent inconvenience to the users and causes negative
effects in terms of safety and environmental pollution.
Keywords
driver behaviour, roundabout, car-following, model.
Related Book
Other papers in this volume
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