1 AIT Asian Institute of Technology

Computer simulation for bus transportation planning

AuthorSeetharam, K. E.
Call NumberAIT RSPR no. IE-86-14
Subject(s)Local transit--Simulation methods
NoteA research study submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractThe purpose of this study was to develop a computer simulation model to study the performance during the peak periods and periods of congestion, of a bus route operated by the Bangkok Mass Transit Authority. The model was developed using the data available on the air- conditioned bus route number 2 in Bangkok to simulate the performance during the morning peak period . The computer program was coded in GPSSV and run on the IBM3083 computer. The model simulates the following major events: 1) bus starts first journey from a terminus according to a headway schedule at the beginning of the day , 2) bus arrives at a bus stage, 3) bus waits for passengers to alight and board, 4) bus travels in a link, 5) bus waits at a signal or railway crossing, 6) passenger arrives at a stage, 7) passenger boards the bus, 8) passenger chooses destination, 9) passenger alights from the bus, 10) bus reaches the other terminus, and 11) bus waits at the terminus for a layover time and begins the next journey. The simulation program generates tables and histograms with the average and the standard deviation of the following parameters for inbound and outbound trips: 1) Number of passengers in the bus while leaving a stage, 2) Number of passengers missing the bus at a stage, 3) Stopped time at a stage, 4) Travel time in a link, and 5) Total travel time for a journey . A detailed Timetable Matrix is also printed. The average c.p.u . time taken for a simulation run was 16.4 sec and it required a virtual memory of 160K. A new timetable was prepared to improve the performance of the bus route. The model can be used to simulate any bus route and the impacts of the Transportation System Management strategies such as: 1) Changing the headway schedule, 2) Changing the number of buses allocated to the route, 3) Removing one or more stages, 4) Shortening the route, 5) Changing the layover time at a terminus, and 6) Changing the bus capacity can be studied.
Year1986
TypeResearch Study Project Report (RSPR)
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSIndustrial Engineering (IE)
Chairperson(s)Oudheusden, Dirk L. van
Examination Committee(s)Tabucanon, Mario T. ;Kammeier, Hans Detlef
Scholarship Donor(s)Government of France
DegreeResearch Studies Project Report (M. Sc.) - Asian Institute of Technology, 1986


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