Details:

• Alternative Title:
  Project title: Developing a work zone safety and mobility performance monitoring plan for Texas
• Creators:
  Ullman, Gerald L. ; Porter, Richard J. ; Karkee, Ganesh J.

  Ullman, Gerald L. ; Porter, Richard J. ; Karkee, Ganesh J. Less -
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration

  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration Less -
• Subject/TRT Terms:
  [+]

  Roads $z Texas $x Maintenance And Repair $x Safety Measures. Work Zone Safety Work Zone Traffic Control
• Publication/ Report Number:
  FHWA/TX-09/0-5771-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2006-Aug. 2008.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  In this report, Texas Transportation Institute researchers identify key work zone safety and mobility
  
  performance measures that the Texas Department of Transportation (TxDOT) should target as part of a work
  
  zone monitoring program within a district, region, or across the state. Analysis methodologies and
  
  computational procedures are presented that will yield the recommended performance measures. For
  
  mobility-based measures, researchers recommend that TxDOT target the collection of queue length and
  
  travel time delay data caused by temporary lane closures, as the congestion and delays that result from those
  
  activities are the simplest to isolate and attribute to the work activities themselves.
  
  With regard to work zone safety monitoring, researchers developed procedures that aid a district or project
  
  engineer in determining which projects are most suitable for safety monitoring via a periodic review of crash
  
  statistics occurring before and during the project. Researchers developed graphs that indicate combinations
  
  of work zone length (or work zone segment length), average daily traffic, normal crash rate, and work zone
  
  phase or project direction that will most likely allow for reasonable inferences to be made regarding the
  
  relative level of safety being maintained within the project. Researchers also developed graphs to aid field or
  
  district personnel in quickly determining whether accident frequencies being experienced during a project are
  
  within, or above, tolerance limits for that type of project on that facility.
  
  
• Format:
  PDF
• Funding:
  Project 0-5771
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  [+]

  urn:sha256:9c263656b59ab8857ec64afb6bb432834ece5fa38eefa9543d45f36f8226995b
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16851/dot_16851_DS1.pdf
• File Type:
  [PDF-1.24 MB]