Evaluation of Early Merge Static Work Zone Signing in Oklahoma

Details

• Creators:
  Schrock, Steven D. ; See, Chen Fei ; Becker, Matthew ; Mulinazzi, Thomas E.
• Corporate Creators:
  University of Kansas. Dept. of Civil, Environmental and Architectural Engineering
• Corporate Contributors:
  Midwest States Smart Work Zone Deployment Initiative (SWZDI) ; Iowa. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Highway Safety Measures Of Effectiveness Merging Control Merging Traffic Signs Work Zone Safety Work Zone Traffic Control
• Publication/ Report Number:
  45090-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Oklahoma
• Corporate Publisher:
  Midwest States Smart Work Zone Deployment Initiative (SWZDI)
• Abstract:
  This research examined the safety and operational benefits of having traffic merge early into the open lane prior to a work zone merge area. A 2007 law in Oklahoma adopted the use of additional “STATE LAW MERGE NOW” static signing in the advance warning areas approximately 1/2-mile upstream from freeway merge areas. Work zones that were continuations from the 2006 construction season did not use this signing, while new work zones did. This provided a unique opportunity to compare the impact of early merge signing in actual work zone environments. Measures of effectiveness examined included the number and percentage of traffic that remained in the closed lane and the number of conflicts that occurred at the merge area.
• Format:
  PDF
• Funding:
  STE45090 ; 09010
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:93eb90db4618cba6b621784c6f3d4626685da339148f25167db7e5e7b2acd8e1b26968d14b9461f925c470569a31ffc9851bd2e68fa812dd8742fd0f31839029
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88142/dot_88142_DS1.pdf
• File Type:
  [PDF - 633.25 KB ]