Integrated Spatiotemporal GIS System for Exploring Intrahousehold Interactions

Activity-based travel demand modeling has long focused on individual scheduling decisions. However, household members do not make their activity/travel decisions in isolation from other members of their household. Rather, they interact in many ways; therefore, their activity/travel patterns are inter-dependent. An explicit recognition of joint episodes is crucial to the development of a new generation of activity-based models, whose performance will be improved in capturing or predicting responses to policy changes in land-use and transportation system. This paper develops an integrated spatio-temporal GIS system to support exploration of intra-household interactions. This framework includes two toolkits. One is called “Space-Time Coincidence Analyst”, which helps identify joint activity/travel behavior undertaken by household members. The core of this toolkit is that we develop a set of flexible criteria for classifying joint episodes. The second toolkit is called “Space-Time Path Visualizer”, which not only helps display each individual space-time path for each household member, but also visualizes joint activities undertaken by any two household members. Our system is the first integrated household-based spatio-temporal GIS model, which combines functions of analysis and visualization of intra-household interactions together in a complimentary way. At the same time, these two toolkits can be used individually, which means that the user can choose using either one of them or both at any sequence, depending on their research goals. Furthermore, our framework is not limited to any specific survey data set. In other words, it can be applied to various surveys in different regions.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 23p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01046494
  • Record Type: Publication
  • Report/Paper Numbers: 07-1597
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 6:15PM