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Guardrail can refer to *Guard rail, a system designed to keep people or vehicles from (in most cases unintentionally) straying into dangerous or off-limits areas. *Guard rail (or guardrail) is another term used in North America to refer to traffic barriers that are installed on road sides or medians (central reservations) for automobile safety *Guard rails (railroad) installed parallel to trackbed rails, for railway safety *RC-12 Guardrail, a U.S. Army intelligence-gathering aircraft based on the C-12 Huron *Roof edge protection, rails installed on roofs to protect construction and roofing workers 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「Guardrail (disambiguation)」の詳細全文を読む スポンサード リンク
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