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The Modified Thrie Beam Guardrail

American Government Special Collections Reference Desk

American Government Video

The Modified Thrie Beam Guardrail
Film

A Federal Highway Administration film.

This film is available courtesy of FedFlix (public domain).

Creative Commons License
This work is licensed under a Creative Commons CC0 1.0 Universal License (Public Domain Dedication).

Page Sections
Video


Video

Duration: 9:15
The thrie beam guardrail has been modified to improve performance in large-vehicle impacts by increasing the depth and energy-absorbing capacity of the block-out. Crash tests show that this design can safely contain and redirect a wider range of vehicles than other W-beam designs. Terminals and transitions are shown. Costs of installation and repair are discussed, and the design is recommended for sites with heavy traffic.
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