Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Line S2 is the first line of the Beijing Suburban Railway to begin operation. Opened on August 6 of 2008, it runs from the Beijing North Railway Station, near Xizhimen, to Badaling in Yanqing County, following the old Beijing-Zhangjiakou Railway, and provides faster, more frequent and convenient service than preexisting trains. Trains can reach maximum speed of 160 kilometres per hour. A trip from the north station to the Badaling Great Wall takes about 1 hour and 22 min.