Advanced development and calibration of the network robustness index to identify critical road network links.

Details

• Creators:
  Novak, David ; Sullivan, Jim ; Aultman-Hall, Lisa, 1968-
• Corporate Creators:
  Transportation Research Center
• Subject/TRT Terms:
  • Highways
  • Roads
  • Networks
• Publication/ Report Number:
  UVM TRC Report # 10-019
• Resource Type:
  Tech Report
• Geographical Coverage:
  Vermont
• Corporate Publisher:
  University of Vermont. Transportation Research Center
• Abstract:
  In this research project, transportation flexibility and reliability concepts are extended and applied ; to a new method for identifying the most critical links in a road network. Current transportation ; management practices typically utilize localized level-of-service (LOS) measures such as the volumeto- ; capacity ratio (V/C) (Bremmer et al. 2004, Dheenadayalu et al. 2004). The solution to congestion ; planning problems is often to simply add more capacity along existing highway segments. This is a ; purely localized solution. The localized V/C approach does not necessarily allow planners to identify ; the most critical highway segments or corridors in terms of maximizing system-wide travel-time ; benefits, or to assess the robustness of a network. For system-wide objectives, there is a need for ; coincident consideration of the spatial distribution of traffic demand, the network topology and the ; network capacity. ; While implementing localized solutions may result in localized benefits, these solutions may have ; limited, negligible or even adverse system-wide effects. Recent studies of induced travel in North ; America offer strong evidence that this is indeed the case (see Scott 2002). An equal level of ; investment in another location or locations may provide greater benefits to the overall network. We ; argue that the localized V/C-based planning approach is inadequate and propose a comprehensive ; system-wide approach to identifying critical infrastructure and evaluating network performance – ; the Network Robustness Index (NRI) first introduced in Scott et al. (2006) and refined in Sullivan et ; al. (2010). At the same time, the management approach must complement existing local planning ; efforts. With the increased focus on ensuring that transportation infrastructure is robust from both a ; security standpoint as well as for evacuation needs, reliance on localized congestion measures to ; direct policy is clearly outdated.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20583/dot_20583_DS1.pdf
• File Type:
  [PDF - 489.08 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a9174a786381ef2b78672c153127e8fec0738c5b93628ba1754d2d4a5aaedbe9bc59c42cc7fbf8bd76a52c036940372580d74cca464770203b67b066fd44c189