Overnight locomotive-hauled trains consisted of 1st salon sleepers, 2nd class couchettes, and 3rd class coaches. Services ran overnight and passengers were carried in sleeping cars and couchettes. Beds and couchettes have to be reserved when tickets are brought. After 1978, the train added cars with couchettes to attract more middle-class passengers. Two-level Type B couchettes had four beds which could be individually enclosed with a curtain.