A. 踏切支障報知装置とは、踏切で車両等が立ち往生したり危険が発生した場合に、踏切が塞がれている事を駅や列車に知らせる為の保安装置です。
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A. 踏切支障報知装置とは、踏切で車両等が立ち往生したり危険が発生した場合に、踏切が塞がれている事を駅や列車に知らせる為の保安装置です。
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