W-beam guiderail transition from light to heavy posts.

Author(s)
Herring, D.G. & Bryden, J.E.
Year
Abstract

Two full-scale crash tests evaluated a transition between light-and heavy-post w-beam guiderail. The transition consisted of lowering the rail height from 30 to 27 inches and reducing the spacing of the light posts as the heavy-post section is approached. The crash-test impacts were just upstream of the heavy-post section using 1,800- and 4,500-pound sedans. Test results were generally acceptable in terms of national co-operative highway research program (NCHRP) criteria. Although the exit trajectory of the 4,500-pound sedan exceeded the recommended threshold limits, the vehicle was not judged to present a significant threat to other vehicles.

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Publication

Library number
C 15098 (In: C 15093 S) IRRD 829200
Source

In: Roadside safety features : a peer-reviewed publication of the Transportation Research Board TRB, Transportation Research Record TRR No. 1198, p. 55-61, 6 ref.

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