Train Scheduling of Addis Ababa Light Rail Transit System
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Date
2014-07
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Addis Ababa University
Abstract
Train scheduling is the process of timetabling and train assignment along a given train network.
The key objective of this project is to design an efficient train scheduling of Addis Ababa Light
Rail Transit system which minimizes passenger waiting time and operational costs without
jeopardizing passenger safety.
There are many approaches/techniques that are used to model and implement train scheduling
especially for light rail transit systems that have many intermediate stations. In this thesis
reviewing previous relevant literatures with a special attention paid to the light rail transit
systems, quantitative analysis and simulation methods are being used. The scheduling is being
generated using two separate rule-based systems that are off peak hours and peak hours. The
main components of train scheduling such as trains, stations, routes are being described or
specified with their constructive parameters. The mathematical model components proposed are
being analyzed, and the extent that reflects real business practice is being presented. It was
uncovered that the objective function which includes both the service level objective
(minimizing passenger travel and waiting time) and the operational objective (minimizing the
number of trains) especially for the Addis Ababa Light Rail Transit (AALRT) system as it is new
in Ethiopia.
Finally, this paper is focused on the constraints involved on the current system that can be used
to generate an efficient train scheduling which is being modeled, solved the model, validated the
model via simulation and verified the results in such a way that the schedule is made to be
displayed at any station to show the trains allocated along that route with their arrival and
departure times on the operating time of whole day to satisfy the desired service levels.
Description
Keywords
Train Scheduling, Addis Ababa Light Rail Transit System, Quantitative Modeling, Simulation