The Effect of ATIS on Transportation Systems: Theoretical Analysis and Numerical Applications

In this paper some of the inconsistencies and limitations of other models in the simulation of the effects of Advanced Traveler Information Systems (ATIS) will be discussed, with particular interest of pre-trip information on the day-to-day dynamics of transportation systems. An innovative model will be proposed, where the compliance of travelers to ATIS will be considered to be elastic and explicitly modeled; it will be considered both variable within the whole dynamic process and dependent on the accuracy of the information. For the sake of simplicity, a fixed O/D demand will be considered and the effects of ATIS will be taken into account only on route choices. It will be shown that in most cases ATIS cannot be used to optimize the performance of the traffic network (system optimum), rather, travelers are complaint to information only if supplied according to user optimum. The main role of ATIS in recurrent traffic conditions will be shown to be the stabilization of the transport systems. The first section of the paper will introduce motivations of the proposed model and how they have been addressed in literature, moreover, it will anticipate most of the innovative characteristics of the proposed model, as well as the expected accuracy of the results. In the second section, the model will be formalized as a dynamic process that includes explicit simulation of compliance. In the third section, the result of some numerical experiments, related to different information strategies will be presented and some theoretical analysis will be carried out by determining the stability domain for the dynamic process in presence of information.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 723-732
  • Monograph Title: Urban Transport XI: Urban Transport and the Environment in the 21st Century

Subject/Index Terms

Filing Info

  • Accession Number: 01001162
  • Record Type: Publication
  • ISBN: 184564008X
  • Files: TRIS
  • Created Date: Jun 23 2005 12:40PM