Road Traffic Congestion Estimation Using 3G Handover Data: For the Case of Addis Ababa
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Date
2020-02-23
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Addis Ababa University
Abstract
There is an increase in vehicle use in Addis Ababa which increases by 5% annually, not only
this but also the urban arterial roads are of mixed type and there are no automated means that
monitor the road traffic congestion. This creates road traffic congestion which is one of the
main problems that affects everyone in time, energy and resource management. Road traffic
estimation is instrumental in developing a more advanced transportation system to avoid
congestions, trip delay, improper fuel usage, and vehicle use. There are different methods to
collect data and estimate the degree of road traffic congestion such as manual counting
(observation), global positioning system, inductive loops, using a camera system. The latter
three mentioned are expensive in installation and maintenance with coverage limitations. This
thesis focuses on one of the cost-effective alternative methods, which is based on 3G cellular
handover data in the case of Addis Ababa's main selected road for the experiment.
In this study, we examined this alternative method to estimate the degree of road traffic
congestion using a simple feedforward backpropagation neural network by considering and
ignoring the altitude parameter. Related research has been done, but this study does not show
by considering the altitude as a factor. We collect handover data while driving along selected
arterial roads in Addis Ababa, and also handover archived data has been used for some
sections of the streets for the experiment. For the congestion estimation data classification,
AADT(Annual average daily traffic) data has been collected from AAPC(Addis Ababa police
commission), and LOS(level of services) also used, which is based on the speed of test vehicles.
The neural network was then trained and tested using the collected data against the road level
classification done. The results found showed better performance of congestion estimation with
an accuracy of 92.5% when the feature altitude is considered whereas without considering this
variable, the result found is similar to those of other related research works 82.1 %. It has been
shown from the effects that the improvement in the accuracy of estimation increases by 10%.
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Keywords
Cellular networks, 3G handover, GIS, Weka, MLP