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Citation |
Holloway JC, Faller RK, Pfeifer BG, Post ER. Transp. Res. Rec. 1991; 1367: 1-12. |
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Copyright |
(Copyright © 1991, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing) |
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DOI |
unavailable |
PMID |
unavailable |
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Abstract |
Safety-shape bridge rails are substandard if they are less than 32 in. high, according to Section 2.7.1.2.2 of the AASHTO "Standard Specifications for Highway Bridges". However, a substandard bridge rail may remain in operation if it passes a safety performance evaluation by full-scale crash testing. Therefore, Nebraska and Kansas pooled their efforts with Missouri to determine whether a 32-in. standard New Jersey safety-shape bridge rail would still provide a satisfactory safety performance if a 2-in. overlay were placed on the adjacent bridge deck. To evaluate the performance of this bridge rail, the Midwest Roadside Safety Facility conducted three full-scale vehicle crash tests on the Missouri 30-in. New Jersey safety-shape bridge rail. Test MS30-1 was conducted with an 18,011-lb single-unit straight truck at 16.1 degrees at 52.5 mph. Test MS30-2 was conducted with a 1,759-lb small automobile at 20.0 degrees at 62.5 mph. Test MS30-3 was conducted with a 5,460-lb pickup truck at 20.0 degrees at 63.5 mph. The test procedures were conducted and reported in accordance with the requirements in NCHRP Report 230. The tests were evaluated in accordance with the PL-2 safety criteria in the AASHTO "Guide Specifications for Bridge Railings". The safety performance of the Missouri 30-in. New Jersey safety-shape bridge rail was found to be satisfactory according to the AASHTO PL-2 safety criteria. Language: en |