and Thresholds for Virginia Freeways.

Details

• Creators:
  Fontaine, Michael D. ; Cottrell, Benjamin H. ; Chun, PiJin
• Corporate Creators:
  Virginia Center for Transportation Innovation and Research
• Corporate Contributors:
  Virginia. Dept. of Transportation
• Subject/TRT Terms:
  • Work zones
  • Work zone safety
  • Highway safety
  • Traffic safety
  • Work zones, Performance measures,
  • Travel time, Private sector data, Work zone mobility
• Publication/ Report Number:
  VCTIR 14-R6
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Corporate Publisher:
  Virginia Center for Transportation Innovation and Research
• Abstract:
  "The Federal Highway Administration has been encouraging states to improve their monitoring and tracking of the ; mobility impacts of work zones. The use of mobility performance measures will enable agencies to assess better the ; contribution of work zones to network congestion; to identify specific projects that are in need of remedial action; and ; potentially to assess penalties to contractors creating excessive, avoidable negative impacts. Although the Virginia Department ; of Transportation (VDOT) has defined allowable lane closure hours for the interstate system, VDOT has not defined specific ; performance measures and thresholds for what constitutes “unacceptable” work zone mobility impacts. Performance measures ; and thresholds have been developed by a number of other states, so there is a need to determine whether these could be adapted ; for use by VDOT. ; This study explored issues related to a potential work zone mobility performance measurement program for Virginia. ; The issues investigated included identification of potential performance measures, definition of performance thresholds, and ; recommendations for data sources for performance measurement calculations. This information was synthesized from ; information regarding the experiences of selected states and experiences from a series of case studies that used data from ; Virginia work zones. The review of experiences in selected other states found that delay and queue length were the performance ; measures used most often by the states studied. The Virginia case studies focused on the use of private sector data to generate ; mobility performance measures and found that the level of spatial aggregation in rural areas could inhibit the ability to generate ; accurate performance measures, although granularity was better on urban roads. The level of temporal aggregation was also ; found to influence performance measures. ; The research identified a number of key issues that VDOT should consider as a work zone mobility performance ; measures program is developed. The report recommends that VDOT develop a pilot program that focuses on urban interstates ; initially and convene a task group to develop formal policies and procedures for use in the state."
  More +
• Format:
  PDF
• Funding:
  project no. RC00047
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27470/dot_27470_DS1.pdf
• File Type:
  [PDF - 866.66 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:e4db4f16b3039d23b7657f5c5cb0b9e7de2b7b1150aeb80cbcf40581563a61f5