Wow. From nothing in 1993 to 14 lines, 338 stations and 548km (341 miles) of track – the longest rapid transit system by route length in the world – in 2015. A mere 8 million people use the system on an average weekday. Of interest is the massive expansion in the years leading up to the 2010 Shanghai Wold Expo.
See also this 1939 tram and trolleybus map of Shanghai’s International Settlement.
Source: Wikimedia Commons/user: Terramorphous