City of San Francisco 2011 Bicycle Count Report
The SFMTA's Citywide Bicycle Count Reports provide a detailed description of Livable Street’s summer citywide bicycle counts. This annual count is conducted at key intersections and corridors throughout the San Francisco, with a special focus on locations most frequently used by bicyclists (Market Street and Mission Corridors, for example). In addition to cyclist count data, the report contains information on observed helmet use and proper use of city bicycle facilities. A steady increase in bicycle usage has been observed each year since the counts began in 2006.