Adelaide Metro is the public transport system of Adelaide, the capital city of South Australia. It is intermodal system offering an integrated network of bus, tram, and train service throughout the metropolitan area to 63 million riders annually, with an average daily ridership of 33,000 people. The system has evolved heavily over the past fifteen years, and patronage increased dramatically during the 2014–15 period, a 5.5 percent increase on the 2013 figures due to electrification of frequented lines.