| Author | Zhu, Weinian |
| Call Number | AIT Diss. no. IE-91-01 |
| Subject(s) | Scheduling (Management)
Bus lines--Thailand--Bangkok
|
| Note | A doctoral dissertation submitted in partial fulfillment of the requirements for the degree of
Doctor of Technical Science, School of Engineering and Technology
|
| Publisher | Asian Institute of Technology |
| Abstract | The public bus transit system of Bangkok is one of the largest in the world. Efficient
managerial policies are required to provide good service at minimal cost in a very hectic traffic
environment.
The design of an adapted, computerized bus scheduling methodology is the main subject
of this dissertation. Trip frequency scheduling for bus routes is studied taking into account the
present practices, lack of modern equipment, lack of parking spaces, and the fluctuating traffic
conditions throughout the day. An integer programming model is developed and two heuristic
methods, one of which is based on linear programming and the other being a straightforward
derivation from the present bus operation, are presented. Complementary bus and crew
scheduling methods are also developed taking into account the special feature that buses and
crews are not assigned to a specific trip before the start of the daily operation.
Based on the bus and crew schedules, the relationships between the total employed and
daily crew sizes are established. Crew rostering methods are developed: a procedure to generate
a day off pattern is proposed; an integer programming model to represent the crew rostering
problem with day off and shift constraints is developed; a heuristic method using the Bottleneck
Assignment Problem and a procedure to generate an initial solution are proposed.
The resulting methodology is tested on two selected bus routes in Bangkok and extensive
comparisons are made. All practical aspects, such as parking space and depot location
constraints, are considered. It appears from the study that at similar exploitation costs
significantly better service can be offered to the public.
The practical implementation of the new approach and data collection is also discussed.
The approach has been implemented for two bus routes in the city of Bangkok.
Apart from the very practical approaches mentioned, a more theoretical probabilistic
analysis has been made of the distribution of buses along a bus route in a city with many traffic
congestions. A specific queuing model was developed allowing to predict where bus concentration
will occur. |
| Year | 1991 |
| Type | Dissertation |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Industrial Engineering (IE) |
| Chairperson(s) | Oudheusden, Dirk L. van ;Yordphol Tanaboriboon
|
| Examination Committee(s) | Nagarur, Nagendra N. ;Tang, John C.S. ;Drew, Donald R.
|
| Scholarship Donor(s) | Government of Australia |
| Degree | Thesis (Ph.D.) - Asian Institute of Technology, 1991 |
