IDENTIFYING UNIQUE ROUTES IN TRANSPORTATION NETWORKS

One of the fundamental assumptions of traveler information systems is that each driver has a number of alternative routes she may choose for the journey to her destination. While this concept is intuitively obvious, the number and nature of these alternative routes has received little study. With the advent of Intelligent Transportation Systems (ITS) and real-time route selection capabilities such as those demonstrated in the TravTek project, it is important that the basis of realistic alternative routes be studied. The objective of this paper is to identify i) the number of realistic routes available to drivers between a given origin and destination, and ii) whether this knowledge can be used in the route calculation/selection process. This paper reports on a study undertaken to examine the relationship between the number of routes between a given origin-destination pair and the definition of a route. The paper first examines various definitions of a route and develops some preliminary criteria for distinguishing a unique route. Subsequently, an empirical analysis is performed using a network from Bryan/College Station, Texas as a test bed. Lastly, the potential applications for this methodology within transportation modeling and ITS are briefly discussed.

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Rilett, L R
  • Park, Dongjoo
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Identification systems; Intelligent transportation systems; Mathematical models; Networks; Origin and destination; Passenger information systems; Route choice; Routes; Transportation; Traveler information and communication systems
• Uncontrolled Terms: Transportation models; Transportation networks
• Old TRIS Terms: Identifying
• Subject Areas: Operations and Traffic Management; Planning and Forecasting; Transportation (General); I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00741747
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 21 1997 12:00AM