Headphones

音漏れ注意、ヘッドホン・ステレオの音は控えめに。車内マナーにご協力を
おともれちゅうい、ヘッドホン・ステレオのおとはひかえめに。しゃないマナーにごきょうりょくを
Beware of noise leaking, as for headphone and stereo noise, please moderate them. Subway car manners, please cooperate.

I've been on holiday in Australia. There aren't so many Japanese signs there although I did catch a few.