Title page for ETD etd-122898-222857


Type of Document Dissertation
Author Bang, Chulho
Author's Email Address phxnov@yahoo.com
URN etd-122898-222857
Title Integrated Model to Plan Advanced Public Transportation Systems
Degree PhD
Department Civil Engineering
Advisory Committee
Advisor Name Title
Trani, Antonio A. Committee Chair
Drew, Donald R. Committee Member
Jacobson, Sheldon H. Committee Member
Lin, Wei-hua Committee Member
Van Aerde, Michael W. Committee Member
Keywords
  • AVL
  • Simulation
  • Systems Dynamics
  • GIS
  • Lowry Model
  • Transit
  • Logit Model
  • Evaluation
  • ITS
Date of Defense 1998-08-11
Availability unrestricted
Abstract
The primary objective of this study is to develop an integrated public transportation planning framework to evaluate and plan Advanced Public Transportation Systems (APTS). With this purpose, a systems approach point of view is adopted to study the influence of new APTS technology in supply and demand transit variables. In this project the Systems Dynamics methodology is adopted to track the dynamic behavior of model variables and feedback loops forming among them. The proposed framework is illustrated in a case study involving automated vehicle location systems (AVL) applied to a small transit community.

The proposed approach follows the same steps of the Systems Dynamics method; First, identify some key variables which are not only susceptive to AVL technology but also affect the supply-demand relationship of a bus transit environment. Second, trace and simplify the causal relationships of the variables considering impacts of facility supply changes to passenger demand responses and vice versa. To accomplish this, four detailed sub-models representing parts of the transit system are developed and combined under the Systems Dynamics methodology point of view. Theses Sub-models are: 1) demography, 2) urban transportation planning, 3) bus operations, and 4) evaluation. Finally, to validate the model procedure, the model is applied to a case study. This study attempts to encompass as many as possible factors around a bus transit system environment which can be impacted by new APTS technology to illustrate the use of the proposed framework. Some of these factors include: 1) Demographic characteristics; 2) urban or social activity of the study area and 3) changes to transportation facilities. The case study illustrates how the physical characteristics of the transit systems such as traffic demand, traffic conditions along the transit route, route layout, and bus performance can be affected by the new technology.

Since APTS impacts are time dependent a continuous multi-loop simulation technique is adopted to track dynamic changes of all model variables. The analysis of the transit system is carried over a 20-year life cycle to illustrate the long term dynamics of the feedback structures inherent in the model.

[Vita removed Aug. 2, 2010. GMc]

Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  2CHAP0.pdf 20.87 Kb 00:00:05 00:00:02 00:00:02 00:00:01 < 00:00:01
  3CHAP1.pdf 12.20 Kb 00:00:03 00:00:01 00:00:01 < 00:00:01 < 00:00:01
  4CAHP2.pdf 93.77 Kb 00:00:26 00:00:13 00:00:11 00:00:05 < 00:00:01
  5CHAP3.pdf 142.03 Kb 00:00:39 00:00:20 00:00:17 00:00:08 < 00:00:01
  6CHAP4.pdf 204.86 Kb 00:00:56 00:00:29 00:00:25 00:00:12 00:00:01
  7CHAP5.pdf 260.08 Kb 00:01:12 00:00:37 00:00:32 00:00:16 00:00:01
  8CHAP6.pdf 9.73 Kb 00:00:02 00:00:01 00:00:01 < 00:00:01 < 00:00:01
  APP_0.pdf 19.75 Kb 00:00:05 00:00:02 00:00:02 00:00:01 < 00:00:01
  APP_A.pdf 91.37 Kb 00:00:25 00:00:13 00:00:11 00:00:05 < 00:00:01
  APP_B.pdf 25.74 Kb 00:00:07 00:00:03 00:00:03 00:00:01 < 00:00:01
  APP_C.pdf 62.14 Kb 00:00:17 00:00:08 00:00:07 00:00:03 < 00:00:01
  APP_D.pdf 101.14 Kb 00:00:28 00:00:14 00:00:12 00:00:06 < 00:00:01
  APP_E1.pdf 53.78 Kb 00:00:14 00:00:07 00:00:06 00:00:03 < 00:00:01
  APP_E21.pdf 57.89 Kb 00:00:16 00:00:08 00:00:07 00:00:03 < 00:00:01
  APP_E22.pdf 26.73 Kb 00:00:07 00:00:03 00:00:03 00:00:01 < 00:00:01
  APP_F1.pdf 36.22 Kb 00:00:10 00:00:05 00:00:04 00:00:02 < 00:00:01
  APP_F2.pdf 25.38 Kb 00:00:07 00:00:03 00:00:03 00:00:01 < 00:00:01
  COVER.pdf 6.62 Kb 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01

Browse All Available ETDs by ( Author | Department )

dla home
etds imagebase journals news ereserve special collections
virgnia tech home contact dla university libraries

If you have questions or technical problems, please Contact DLA.