@article{ref1,
title="Minnesota bridge rail-guardrail transition systems",
journal="Transportation research record",
year="1992",
author="Mak, King K. and Korfhage, Glenn R. and Kindom, J. A.",
volume="1367",
number="",
pages="76-83",
abstract="Summarized are the results of crash testing and evaluation of two W-beam guardrail-to-concrete safety-shaped bridge-rail transition designs developed by the Minnesota Department of Transportation. The first, integral end-post design, is intended for use with new construction and reconstruction in which replacement of bridge railings is required. The second, separate end-post design, is intended for use as retrofits to existing bridge railings on 3R and 4R projects. Three crash tests were used to evaluate the integral end-post design. <br><br>RESULTS of the crash tests indicated that the integral end-post design met all impact performance evaluation criteria according to guidelines outlined in NCHRP Report 230. Two versions of the separate end-post transition design were evaluated, each with one crash test. <br><br>RESULTS of the first crash test indicated that the initial separate end-post design did not meet the impact performance evaluation criteria according to guidelines outlined in NCHRP Report 230. The vehicle pocketed and impacted the end of the concrete bridge end post, resulting in an unacceptable level of longitudinal occupant ridedown acceleration. The design was then modified and the improved transition design was successfully crash tested.     Record URL:        http://onlinepubs.trb.org/Onlinepubs/trr/1992/1367/1367-008.pdf<p /><p>Language: en</p>",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}