What are the advantages of double-decker trains?

As an ideal long-distance sightseeing and holiday train, double-decker train may become the main type of passenger train in the future. This kind of train can effectively use its space and increase the number of passengers as much as possible. From the actual effect, the double-decker train can increase the passenger capacity by 40 ~ 60%. Moreover, double-decker trains can improve the lookout and comfort of trains. Because of its wide view on the upper floor, people can enjoy the scenery along the way through the large glass windows open on both sides. At the same time, the upper seat is far away from the noise sources of moving parts and power generation devices under the car, which is quiet and comfortable. The lower floor is equipped with various private rooms and service facilities such as cafeteria, bar and karaoke.