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BUS BUNCHING
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SIMULATION OF BUS BUNCHING AND ITS SOLUTIONS VIA MATLAB
CE 505- Applied stochastıc analysis and modelıng
What ıs bus bunchıng?
Motivation
Due to the empty buses
more CO2 emission
occurs. Hence,
environmental damage
increases.
This issue causes fully loaded
lead bus and
empty following bus .
The bus bunching
problem is a
widespread issue
all around the world.
Relevant Topics
Probability and statistics
Such reasons encouraged
me to focus on this problem
and give chance to find an
effective solution.
Properties of cotinious and discrete random variables
Bus bunching happens because, if a bus gets delayed,
then there will be more people waiting at the next stop than anticipated.
The extra passengers' boarding time makes the bus even later,
and so on in a vicious cycle.
To combat bus bunching, bus sytems have to build slack into the system,
but that slack involves extra buses and labor and longer travel times.
Ahmet karakurt
Instructor:ASSOCIATE PROF. EMRE OTAY
Methodology
DATA ACCESS
VISUALIZING TIME DELAYS
Distance length between bus tops,
time headway for bus route,
for each minute, number of passenger wıll be calculated
vıa Poisson distribution.
In time, delays will occur in the system due to the increasing
embussment tıme.
average number of passenger for each bus stops
mınımalızıng bus bunchıng
Vısualızıng bus bunchıng
Optimum speed will be calculated for the following vehicle for each distance of bus stops
Creating graphics between following and lead vehicle based on time and distance.
Distance between each vehicle will reduce in time and bus bunching will occur.
through the intelligent transportation system, the speed value that bus driver should consider will be shown on the screen of validator.