Where are people biking?
The SFMTA monitors bicycle volumes and commute trends citywide through three data collection methods: ACS Commute Data, annual bike counts collected manually at specified locations and automated counters citywide. One year ACS Commute Data displays the most recent bike volume trends for bike mode share citywide. Since 2006 the SFMTA has conducted annual bicycle counts at intersections during the evening peak period in the second week of September to analyze bike volume trends at the same locations annually. Lastly, we have counters throughout the city that continuously collect bike volume data. This data is collected and analyzed together to help inform policy and planning decisions as the agency works towards implementing more complete street designs citywide.
Annual ACS Bicycle Commute Mode Share
Bicycle commute mode share by census tract
The American Community Survey is an ongoing statistical survey by the U.S. Census Bureau to provide a portrait of a community's characteristics. The American Community Survey provides community characteristics at the census tract level through five-year datasets, which contain sufficient survey respones to report findings based on a statistically significant sample. The map below aggregates bike mode share data over a five year period of time to display the most recent bike volume trends by census tract.
PDF Maps by Year
Spatial data for bike parking citywide can be found on DataSF, here.