United States Department of Transportation
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Testing of South Dakota Sign Support System, Foil Test Numbers: 9SF005 and 95F006
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1995-07-01
[PDF-6.75 MB]
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Alternative Title:Crash Testing of Dual 4" x 6" Cedar Posts for Breakaway Applications [Project title from cover]
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Edition:Test Report, February 1995
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Abstract:This test report contains the results of two crash tests performed at the Federal Outdoor Impact Laboratory (FOIL) in McLean, Virginia. The tests were performed on a small sign support system at 35 km/h, test 95F005 and at 100 km/h, test 95F006. The vehicle used for the tests was a 1986 Honda Civic. The purpose of these tests was to evaluate the low- and high-speed safety performance of the South Dakota red cedar post sign support. The sign support was made from a 102-mm by 152-mm western red cedar wood post. No holes were drilled in the posts, and the posts were buried 1.2 m in weak soil. The performance evaluation was based on the latest requirements for breakaway supports as specified in the National Cooperative Highway Research Program, Number 350. These criteria specify, in pan. that the occupant change in velocity must be 5 mis or less, that the significant test article stub height remaining after impact be no more than 102 mm, and no occupant compartment intrusion. The test results indicate that the western red cedar wood post sign support system meets all of the applicable safety criteria for low-speed and high-speed tests in weak soil as specified by the FHWA.
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