From sfcriticalmass.org:
Critical Mass is a mass bicycle ride that takes place on the last Friday of each month in cities around the world. Everyone is invited! No one is in charge! Bring your bike!
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SFMTA board again fails in its role to put transit, safety, and city wide interests above parochial politics
The San Francisco Transit Riders wants YOU to urge the SFMTA Board of Directors to approve stronger West Portal safety and transit improvements