"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 92F015. The vehicle used for these test was a 1985 Honda Civic. The purpose of this test was to evaluate the low-speed safety performance of a dual post sign support with concrete foundations in weak soil. The posts were made from 4-in by 4-in (102-mm by 102-mm) pressure treated wood and were spaced 3.5 ft (1.1 m) apart. 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 mm), and that there can be . no occupant compartment intrusion. The test results indicate that the dual wood post sign support with concrete foundations in weak soil does not meet all of the applicable performance criteria for roadside safety appurtenances specified by the FHWA"--Technical report documentation page.