How seat numbers work
- Rows are numbered from the front of the train towards the back.
- Seats are lettered A to E across the car in ordinary class: A and E are windows.
- Ordinary cars use a 2+3 layout: A and B on one side, C, D and E on the other.
- Green Car uses a 2+2 layout, so A and D are windows and every seat has an aisle.
- GranClass on the Tohoku and Hokuriku lines uses 1+2 with only 18 seats.
