Development and MASH full-scale crash testing of a high-mounting-height temporary single sign support with aluminum sign.

Details

• Creators:
  Dobrovolny, Chiara Silvestri ; Arrington, Dusty R. ; Bligh, Roger P. ; Ivev, Don L.
• Corporate Creators:
  Texas Transportation Institute. Proving Ground
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Aluminum Crashworthiness Impact Tests Sign Supports Tubing Work Zone Safety Work Zone Traffic Control
• Publication/ Report Number:
  FHWA/TX-13/9-1002-12-5
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  Texas Department of Transportation. Research and Technology Implementation Office
• Abstract:
  Work zone traffic control devices such as temporary single sign supports are a primary means to communicate
  
  information to motorists in work zone areas. The Federal Highway Administration and the Manual on Uniform Traffic
  
  Control Devices require work zone traffic control devices to be crashworthy. That is, they should not pose a safety
  
  hazard to motorists and/or work zone personnel if impacted by errant vehicles. The objective of this research was to
  
  develop a nonproprietary, lightweight, crashworthy, work-zone single sign support for use with an aluminum sign
  
  substrate mounted at a height of 7 ft. The device is intended to meet the evaluation criteria in MASH.
  
  Texas A&M Transportation Institute (TTI) researchers decided to utilize perforated steel tubing for the frame of the
  
  new temporary single sign support system to accommodate requests to help make the system lightweight, durable, easy
  
  to assemble, and adjustable. Design concepts were developed and evaluated through engineering analysis,
  
  developmental full-scale crash tests, and finite element computer simulations. Results were reviewed with the project
  
  monitoring committee and a system was selected by TxDOT for evaluation through full-scale crash testing.
  
  MASH Test 3-72 with the 2270P pickup truck was performed to evaluate the behavior of the sign support
  
  oriented at both 90 degrees and 0 degrees. The sign support system oriented at 0 degrees passed all the MASH
  
  evaluation criteria. Secondary contact between the pickup truck and the aluminum sign panel of the sign support
  
  system oriented at 90 degrees caused a cut in the roof that constituted occupant compartment intrusion. Consequently,
  
  the sign support system did not pass MASH occupant risk criteria. The report recommendations possible design
  
  modifications to mitigate this behavior and improve impact performance for the pickup truck.
  
  
• Format:
  PDF
• Funding:
  Project 9-1002-12
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:21f93720266fb161624c2816a28ccc8d37ae941ade982a3e8202299a02d6ee8771683c8d6d0bd931c063dcd418c19263607b54d966129cf6e19ff877604cc6f7
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25817/dot_25817_DS1.pdf
• File Type:
  [PDF - 20.76 MB ]