This report assesses the communications capacity of the traffic management systems being installed in Texas with a view to two-way communications between the traffic management centers and vehicles on the roadway. The study will investigate the general telecommunications requirements for information flow, both from and to vehicles and traffic centers. Various approaches to the communication problem have been studied in terms of data rates and bandwidth requirements, feasibility of implementation and the ability to incorporate future expansions. These approaches include the use of infrared optical communications in a distributed environment, conventional spread spectrum radio, and the use of a dedicated frequency-band. This report only investigates those communication systems which offer the most promising methods for communicating between vehicles and a traffic management center. It does not consider, for example, the distribution using a fiber-optic network installed under major highways. The capacity requirements of such a network are not covered in this report. The emphasis is on digital systems that offer unique advantages over analog systems, including the ability to integrate with existing data networks such as the telephone network.

  • Supplemental Notes:
    • Research study title: Texas Advanced Transportation Technology Project.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011

    Texas Department of Transportation

    Transportation Planning Division, P.O. Box 5051
    Austin, TX  United States  78763
  • Authors:
    • Georghiades, C N
    • Patarasen, S
    • Soljanin, E
    • Jardak, H
    • Wills, W M
  • Publication Date: 1991-11

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 97 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00623583
  • Record Type: Publication
  • Report/Paper Numbers: TX-92/1245-2, Res Rept 1245-2, TTI: 2-1-90/1-1245
  • Contract Numbers: Study 2-1-90/1-1245
  • Created Date: Jul 31 1992 12:00AM