New sleeping cars were designed specially for City Night Line and 2 different types are currently in use: the double-deck sleeping car (type 171.X and 172.X) and Comfortline (type 173.1).
软卧车采用专门为城市夜线设计的产品，目前正在使用的有两种类型：双层型（型号为171.X及172.X）及舒适型（型号为173.1）。