* Carriage without a conductor's office seat: This kind of carriage is usually crowded, because no one is working, so there is no reserved seat.
* Carriage with conductor's office seat: This kind of carriage is usually spacious, because the conductor needs to work, so there are reserved seats.
* Windows with seat numbers ending in 0, 4, 5 and 9: This layout is usually in a carriage with a train conductor's office seat, because the train conductor needs a window seat to work.
* No Seats 0: This layout is usually in a carriage without a conductor's office seat, because no one needs to work by the window.
The specific layout may change according to the number of trains, models and seat levels. If you need more specific car layout information, you are advised to consult the railway passenger service website or the local railway passenger service center.