すみません、この車両は自由席ですか？ — Excuse me, is this carriage for non-reserved seats? (Train · Travel, Formal — to staff, JLPT N4)

Gesture & etiquette

Point towards the carriage/seats.

Always check signs on the platform or the train itself first. If asking a fellow passenger, ensure they look approachable. Avoid blocking the aisle. On some lines, all seats are non-reserved or there are no 'cars' but specific zones (e.g., priority seating).