| 摘要 |
A guard rail assembly for a highway. Upright posts are mounted in a line adjacent an edge of the highway. A horizontal guide member is mounted on each post. A bar is mounted for horizontal sliding movement on each guide member. An elongated guard rail member is mounted on the bars. Shock absorber assembly means between the posts and the guard rail member resist rapid outward movement of the guard rail member while permitting controlled outward movement of the guard rail member. The guard rail may carry rollers to reduce friction and ease movement of an engaging vehicle along the guard rail.
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