折返段 back-turning section
栅栏门 barrier
（道口）拦路木 barrier
鸣笛预告标 bell and whistle sign, whistle sign
缓冲桩 buffer stop, bumping post
栅栏门 barrier
（道口）拦路木 barrier
鸣笛预告标 bell and whistle sign, whistle sign
缓冲桩 buffer stop, bumping post
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