OAKLAND -- The Bay Area's bike-sharing program is rolling toward an expansion into Oakland, Berkeley and Emeryville.

The Metropolitan Transportation Commission on Wednesday allocated $8.7 million that provides much of the funding to start the bike service in these three East Bay communities in late 2015.

The cost and startup date has yet to determined.

The Bay Area Bike Share service allows participants to check out bikes for free for up to 30 minutes, and pay for extra minutes.

The program began last summer in San Francisco, San Jose, Redwood City, Palo Alto and Mountain View.