United States Department of Transportation
i
Testing of small and large sign support systems FOIL test number : 92F016
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1994-07-01
[PDF-1.46 MB]
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Alternative Title:Testing of small and large sign support systems Federal Outdoor Impact Laboratory test numbers
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Edition:Test report
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NTL Classification:NTL-SAFETY AND SECURITY-Highway Safety
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Abstract:This test report contains the results of a crash test performed at the Federal Outdoor
Impact Laboratory (FOIL) in McLean, Virginia. The test was performed on a small sign
support system at 20 mi/h (8.9 m/s), test 92F016. The vehicle used for these test was the FOIL breakaway bogie. The purpose of this test was to evaluate the low-speed safety performance of a single post sign support with a soilcrete foundation in weak soil. The post was made from a single 5-in (127-mm) diameter timber with two 2-in (51-mm) holes. Soilcrete consists of nine parts native soil mixed with one part cement. Because the sign post was tested in weak soil, sand was used as the native soil. The performance evaluation was based on the latest requirements for breakaway supports as specified in Volume 54, Number 3 of the Federal Register dated January 5, 1989. These criteria specify, in part, that the occupant change in velocity must be 16 ft/s (4.9 m/s) or less, that the significant test article stub height remaining after impact be no more than 4 in (102 mrn), and that there can be no occupant compartment intrusion. The test results indicate that the single wood timber sign support in a soilcrete foundation in weak soil meets all of the applicable performance criteria for roadside safety appurtenances specified by the FHWA.
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