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:
  • Work zone safety
  • Work zone traffic control
  • Sign supports
  • Crashworthiness
  • Impact tests
  • Tubing
  • Aluminum
• 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.
  More +
• Format:
  PDF
• Funding:
  Project 9-1002-12
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25817/dot_25817_DS1.pdf
• File Type:
  [PDF - 20.76 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:21f93720266fb161624c2816a28ccc8d37ae941ade982a3e8202299a02d6ee8771683c8d6d0bd931c063dcd418c19263607b54d966129cf6e19ff877604cc6f7