Formal — to staff
Train · Station
You
すみません、[線名]の[駅名]方面のホームはどちらですか？
すみません、[せんめい]の[えきめい]ほうめんのホームはどちらですか？
Excuse me, which platform is for the [Line Name] heading towards [Destination Station]?
Romaji: Sumimasen, [senmei]-sen no [ekimei]-hōmen no hōmu wa dochira desu ka? / Reply Romaji: [Sūji]-ban hōmu desu. Achira no kaidan o orite, migi desu.
Reply
[数字]番ホームです。あちらの階段を降りて、右です。
[すうじ]ばんホームです。あちらのかいだんをおりて、みぎです。
It's platform number [X]. Go down those stairs and turn right.
Gesture & etiquette
Point in the general direction you think the platform is, or point to a map.
Clearly state the line name and destination station name for accurate directions. Using your map or phone can help confirm names.
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