CRASH TESTS OF SMALL-ANGLE SIGN SUPPORTS

New York's small sign supports consisting of 3- by 2 1/2- by 1/4-in., 3 1/2- by 2 1/2 by 1/4-in., and 4- by 3- by 1/4-in. angles with 6-, 8-, and 10-in. by 48- by 1/4-in. soil resistance plates, were crash tested with 2240- or 2400-lb cars at 21 to 42 mph to determine compliance with AASHTO criteria for basebending sign supports. These criteria permit a maximum vehicle momentum change of 1100 lb-sec. The smallest support met the specifications using any of the plates. The middle support at first appeared not to meet the specifications because the sign panel did not release from the post properly on impact, resulting in higher momentum change. However, a subsequent test showed this support to meet the specifications using any of the plates, although it is at the upper limit. The largest angle was to stiff to meet the impact criteria. As a result of these tests, design standards are being changed to ensure compliance with the AASHTO criteria. (FHWA)

  • Supplemental Notes:
    • Study title: "Improvement of Highway Safety Accessories".
  • Corporate Authors:

    New York State Department of Transportation

    Engineering Research and Development Bureau, 1220 Washington Avenue
    Albany, NY  United States  12232

    Federal Highway Administration

    Office of Research, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Hahn, K C
  • Publication Date: 1980-6

Media Info

  • Pagination: 36 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319773
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA/NY/RR-80/81 Intrm Rpt., FCP 41G1-224
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 12 1981 12:00AM