Analysis of existing work-zone devices with MASH safety performance criteria.

Details

• Creators:
  Schmidt, J.D. ; Sicking, D.L. ; Lechtenberg, K.A. ; Faller, R.K. ; Holloway, J.C.
• Corporate Creators:
  Midwest Roadside Safety Facility
• Corporate Contributors:
  Mid-America Transportation Center ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Crashworthiness Highway Safety Impact Tests Passenger Cars Pickup Trucks Sign Supports Work Zone Traffic Control
• Publication/ Report Number:
  TRP-03-225-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• NTL Classification:
  NTL-SAFETY AND SECURITY-Highway Safety ; NTL-SAFETY AND SECURITY-Accidents ; NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control Devices
• Abstract:
  Crashworthy, work-zone, portable sign support systems accepted under NCHRP Report No. 350 were analyzed to
  
  predict their safety peformance according to the TL-3 MASH evaluation criteria. An analysis was conducted to determine
  
  which hardware parameters of sign support systems would likely contribute to the safety performance with MASH.
  
  The acuracy of the method was evaluated through full-scale crash testing. Four full-scale crash tests were
  
  conducted with a pickup truck. Two tall-mounted, sign support systems with aluminum sign panels failed the MASH
  
  criteria due to windshield penetration. One low-mounted system with a vinyl, roll-up sign panel failed the MASH criteria
  
  due to windshield and floorboard penetration. Another low-mounted system with an aluminum sign panel successfully met
  
  the MASH criteria. Four full-scale crash tests were conducted with a small passenger car. The low-mounted tripod system
  
  with an aluminum sign panel failed the MASH criteria due to windshield penetration. One low-mounted system with
  
  aluminum sign panel failed the MASH criteria due to excessive windshield deformation, and another similar system passed
  
  the MASH criteria. The low-mounted system with a vinyl, roll-up sign panel successfully met the MASH criteria.
  
  Hardware parameters of work-zone sign support systems that were determined to be important for failure with
  
  MASH include sign panel material, the height to the top of the mast, the presence of flags, sign-locking mechanism, base
  
  layout and system orientation. Flowcharts were provided to assist manufacturers when designing new sign support systems.
  
  
• Format:
  PDF
• Funding:
  SWZDI Contract No. 11533 ; MATC TRB RiP No. 17141
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha256:349ac8d39f9aecea844c2dd9be929112bd3f1af36563fc284e4c6815303694b5
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26350/dot_26350_DS1.pdf
• File Type:
  [PDF - 39.88 MB ]