［逆走防止ブザー30連］30 escalator buzzer 

駐車場ブザーと同じく音程により福岡、関西などの西日本と関東などの東日本で異なるんだね。

YES

Escalator are incredible

This must be in Japan. The correct escalator must be the left. The buzzer is a safety feature so someone does not fall down the wrong escalator.

the uk ones are lights red and green green at top of down escalator and bottom of up escalator and red red on bottom of down escalator and top of up escalator

GO SKSKZKSKSSKSK

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