SAN FRANCISCO (KCBS) — While the San Francisco Municipal Transportation Agency is set to launch a bicycle sharing program in downtown, Supervisor Scott Weiner wants the program available throughout the city.

The pilot program is expected to begin later this year with 350 bicycles. Weiner said that barely registers on the need scale and that about 10,000 more bikes are needed.

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He is introducing a resolution at the Board of Supervisors this week calling on the SFMTA to aggressively pursue a citywide program by 2014.

“It’s great that we’re finally getting our pilot program off the ground, but it needs to quickly become significantly bigger,” he said.

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While cycling has been growing in popularity in San Francisco, the city trails Washington DC, Portland, Chicago and New York when it comes to bicycle sharing.

“So they just hop on a bike and they take it and leave it at a station and they’re done. They don’t have to deal with a bike with them all day long or having to take it back on Muni,” Wiener said with his vision for the program.

Wiener also said he envisions a program that is funded with private donations and hopes the SFMTA can land a major corporate sponsor.

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