As Shanghai is such an immense city, it has more than 1,100 bus lines that extensively cover its reaches with about 50 more lines opened, adjusted, or lengthened annually.
The lines are categorized by time. There are daytime buses, rush hour buses, and night buses.
Some are also categorized by the areas they serve. For example, you can find buses that specialize in the Western Pu River area, Eastern Pu River area, around the Pu River (bridge and tunnel), and the Suburban area.
There are also various bus styles defined by their payment methods. There are some with no conductor buses that cost 1 Yuan (for trips within 13 kilometers), 1.5 Yuan buses (for trips more than 13 kilometers), air conditioned vehicles that cost 2 Yuan, and some special lines that require multiple tickets.
The main bus stations and transit areas in Shanghai for buses are Shanghai Railway Station, People's Square, Xujiahui, Zhongshan Park Wujiaochang, Shanghai Indoor Stadium, and Dongchang Road. On the other hand, the hubs at Xinzhuang, Longyang Road, and Zhangjiang Hi-Tech Park stations have buses that serve more suburban areas nearby.
Buses and their utility can be defined by the number of their route.