EVALUATION OF BENEFITS OF THE INDIANAPOLIS INNERBELT SYSTEM

The purpose of this research effort was to identify and evaluate the benefits of travel time savings, accident savings, and vehicle operating cost savings attributable to the Indianapolis Innerbelt Freeway System. These road-user benefits were determined for a one year period, November 20, 1976 through November 19, 1977. An underlying assumption used throughout this investigation was that, vehicles now utilizing the Innerbelt Freeway System would, in the absence of the Innerbelt System, have to utilize the surface arterial streets. This assumption was then modified to account for the induced traffic component of the Innerbelt Average Daily Traffic. The benefits that occrued to the road-users due to the development and construction of the Innerbelt Freeway System were estimated as the additional travel time, accidents, and vehicle operating costs that would have occurred if the current Innerbelt Freeway travel was made on arterial streets. Travel time, accident rate, and operating cost comparisons were made between Innerbelt routes I-65 and I-70, and corresponding arterial routes, U.S. 52 and U.S. 40. It was found that the travel time savings attributable to the Innerbelt Freeway System amounted to approximately 9.7 million hours for the year studied. It was estimated that due to the construction of the Innerbelt Freeway System, at least 2675 accidents were eliminated of which 16 would have been fatal, 854 would have involved personal injury, and 1805 would have involved property damage only. The savings in operating costs attributable to the Innerbelt Freeway System was estimated at $6,974,000 for the year November 20, 1976 through November 19, 1977. /Author/

  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  USA  47907-1284
  • Authors:
    • Dulic, C
  • Publication Date: 1978-8-2

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 65 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188219
  • Record Type: Publication
  • Source Agency: Purdue University/Indiana Department of Transportation JHRP
  • Report/Paper Numbers: JHRP-78-17 Final Rpt.
  • Files: TRIS, ATRI
  • Created Date: Mar 14 1979 12:00AM