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Gantry (road sign) : ウィキペディア英語版 | Gantry (road sign)
A gantry (also known as a sign holder, road sign holder, sign structure or road sign structure) is a traffic sign assembly in which signs are mounted on an overhead support, or railway signals supported. Gantries are usually built on high-traffic roads or routes with several lanes, where signs posted on the side of the highway would be hard for drivers to see. Gantries may be cantilevered or one sided on the left, right and center (sometimes referred to as a ''half-gantry'' or ''Butterfly gantry''), or they may be bridges with poles on each side. Similar gantries are used in railway signalling on multi-track lines. ==Around the world==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Gantry (road sign)」の詳細全文を読む
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