Title page for ETD etd-12122002-222445


Type of Document Master's Thesis
Author Lu, Qingying
URN etd-12122002-222445
Title Mode Choice Methodology in TRANSIMS
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Hobeika, Antoine G. Committee Chair
Baik, Hojong Committee Member
Trani, Antonio A. Committee Member
Keywords
  • disaggregate
  • TRANSIMS
  • mode choice
  • transportation planning
  • behavioral
Date of Defense 2002-09-20
Availability unrestricted
Abstract
TRANSIMS is a disaggregate, behavioral transportation planning package developed under US DOT's and EPA funding at the Los Alamos National Laboratory (LANL). It is an integrated system of travel forecasting models designed to give transportation planners accurate, complete information on traffic impacts, congestion, and pollution by simulating second-by-second movements of every person and every vehicle through the transportation network of a large metropolitan area. There is no built-in module for travellers' mode choices In TRANSIMS. The modes going with the shortest path are always taken. In Portland Study, a mode choice methodology implemented by a series of feedback processes is proposed. However, it uses aggregate, deterministic mode choice model. There is little solid theoretic ground for the format and coefficients of the generalized costs used in the calibration process. The accessibility to a mode, especially to Transit, was also not included in the model. In the thesis, a disaggregate and deterministic mode choice methodology in TRANSIMS is developed. The accessibility to each mode is analyzed and included in the model. The methodology is then implemented on the Blacksburg transportation planning study, namely Blacksburg_Lite. The analysis of the result is based on the indicator of mode choice, mode split between Transit and Auto. The indicator is close to that in survey data and converged fast. Therefore, this mode choice methodology could be used within TRANSIMS framework.
Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  Thesis_Qingying_Lu.pdf 2.65 Mb 00:12:14 00:06:17 00:05:30 00:02:45 00:00:14

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.