The scale of bike sharing in China, and Hangzhou in particular, dwarfs anything in the West.
Hangzhou, a city of almost 7 million, has a 50,000-bike system with 2,050 bike-share stations which are spaced 300 metres apart in the city centre and less than 800 metres apart in the suburbs.
Bikes are free for the first hour, or 90 minutes after using a public transport card. After that they cost 1 rbm (15 cents) an hour.
The Hangzhou Bicycle Company plans to expand the bike-share system to 175,000 bikes by 2020.