By Douglas Johnson

Residents of major U.S. cities are becoming used to seeing docks for bike sharing programs nestled into parking spaces or next to subway station entrances. Adorned with stylish branding and corporate sponsors' logos, these facilities are transforming transportation in cities across the country.

The modern concept of bike sharing—offering bikes for short-term public rental from multiple stations in cities—was launched in Copenhagen in 1995, but U.S. cities only started piloting their own systems in the past decade. Washington, DC led the way, launching SmartBike DC in 2008 and an expanded network called Capital Bikeshare in 2010. This program now boasts more than 480 stations and a daily ridership of 5,700.