Network Analysis of Freight Diversion and Capacity Issues in Tennessee

The objective of this task is to use the existing intermodal freight geographic information systems (GIS) network to perform freight diversion and capacity analysis in Tennessee. To date, the network has been populated with terminal delays, throughput times, volumes and risk-related attributes (population within 5 miles, crash and incident rates). All network links in Tennessee will be extracted and the following two analyses performed: (1) Truck alternate routes: analyze all interstate segments of Tennessee and determine the shortest detour length, parallel routes (if applicable) and identify truck issues with some of the detours (e.g., bridge weight limitations, bridge clearances, accident locations, etc.). Each interstate corridor will be profiled to highlight these issues. (2) Network vulnerability: model the effects of a long-term infrastructure-disabling event (including bridge failure, rockslide, etc.) as well as deployment of new infrastructure (including bridges, terminals, rail lines and interstates) in Tennessee. This work will be performed using a series of case studies to illustrate how the network can assist in answering questions about scenarios such as adding capacity or evaluating options after a major event that disables a key piece of transportation infrastructure. This will be a joint activity involving faculty and staff from the University of Memphis and Vanderbilt University. The analyses listed above will make extensive use of GIS, Tennessee Department of Transportation (TDOT) aerial photography, and TDOT databases (geometrics, traffic, accident and confidential rail waybill databases).


  • English


  • Status: Active
  • Funding: $100000.00
  • Sponsor Organizations:

    University of Memphis

    Center for Intermodal Freight Transportation Studies
    3815 Central Avenue
    Memphis, TN  United States  38152
  • Performing Organizations:

    Vanderbilt Center for Transportation Research (VECTOR)

    Box 1831, Station B
    Vanderbilt University
    Nashville, TN  United States  37235
  • Principal Investigators:

    Abkowitz, Mark

    Dobbins, James

  • Start Date: 20100801
  • Expected Completion Date: 0
  • Actual Completion Date: 20110531
  • Source Data: RiP Project 27991

Subject/Index Terms

Filing Info

  • Accession Number: 01463729
  • Record Type: Research project
  • Source Agency: Vanderbilt University
  • Files: UTC, RIP
  • Created Date: Jan 3 2013 2:29PM