袖そでビーム

noun

curved end of a highway guard rail

Rare technical term in road engineering. Refers to the curved terminal section of a guardrail designed to absorb impact and prevent spearing.

• 高こう速そく道どう路ろの袖そでビームは、衝しょう突とつ時じの衝しょう撃げきを和やわらげる役やく割わりがある。

  The curved end of the highway guard rail serves to absorb impact during a collision.