Bike crash statistics and hotspots in Lone Mountain/USF, San Francisco
- bike crashes, 2021–2026
- 38
- bike crashes, 2021–2026
- serious or fatal
- 6
- serious or fatal
- fatal
- 0
- fatal
- street with the most
- Masonic Ave
- street with the most
Is Lone Mountain/USF safe to ride a bike?
This page covers traffic crashes, not crime. We don't rate neighborhoods as safe or unsafe: crash counts can't say how risky a street is, and busy streets have more crashes partly because more people use them. What the records show: 38 bike crashes were reported in Lone Mountain/USF from 2021–2026, 6 of them serious or fatal. The most were at Masonic Ave & Fulton St (14). 50% were side-impact crashes at junctions (drivers pulling out or turning across). 21% were sideswipes (close passes, right hooks, car doors).
Lone Mountain/USF here is one of the Analysis Neighborhoods the City of San Francisco uses for its own statistics, built from Census tracts; its edges may differ from where residents put the neighborhood.
Where to look next
How people on bikes get hit in Lone Mountain/USF
- 50% were side-impact crashes at junctions (drivers pulling out or turning across).
- 21% were sideswipes (close passes, right hooks, car doors).
- 11% were riders hit from behind.
- 16% happened after dark.
What the reports show about bike crashes in Lone Mountain/USF
- 16% (California: 21%) of crashes happened after dark.
- 16% (California: 13%) left someone seriously hurt or killed.
- The busiest hour was 4 p.m. (California: 3 p.m.).
Set against all bike crashes in California, 2021–2026. Without traffic counts these can't say how risky a street is.
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
- 0114 crashes · 3 serious or fatal
Masonic Ave & Fulton St
Side-impact crashes at the junction
8 of 14 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.
- Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
- 027 crashes
Masonic Ave & Fell St
Side-impact crashes at the junction
3 of 7 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.
- Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
- 035 crashes
Masonic Ave & Golden Gate Ave
Side-impact crashes at the junction
2 of 5 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.
- Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
- 043 crashes · 1 serious or fatal
Geary Blvd & Stanyan
Close passes and cars turning alongside
2 of 3 crashes were sideswipes: a vehicle alongside, typically a close pass, a right hook, or an opening car door. 67% happened after dark.
- Ride at least 4 feet from parked cars to stay out of the door zone, and watch for drivers who overtake and then turn right across you.
- Use a front and rear light, even on lit streets.
- 053 crashes
Geary Blvd & Arguello Blvd
Side-impact crashes at the junction
3 of 3 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.
- Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
Streets with the most bike crashes in Lone Mountain/USF
| Street | Crashes | Serious/fatal |
|---|---|---|
| Masonic Ave | 18 | 3 |
| Fell St | 4 | 0 |
| Geary Blvd | 3 | 0 |
| Golden Gate Ave | 3 | 0 |
Reported bike crashes, 2021–2026, counted by the street each police report names first, so a crash at a corner counts toward one of its two streets. Long, busy streets collect more crashes partly because more people use them.
Bike crashes in Lone Mountain/USF by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 5 | 1 | |
| 2022 | 7 | 0 | |
| 2023 | 7 | 1 | |
| 2024 | 6 | 2 | |
| 2025 | 7 | 1 | |
| 2026 | 6 | 1 |
Common questions about Lone Mountain/USF
- Where do the most bike crashes happen in Lone Mountain/USF?
- The worst spot is Masonic Ave & Fulton St, with 14 reported bike crashes from 2021–2026, 3 of them serious or fatal. Next are Masonic Ave & Fell St (7) and Masonic Ave & Golden Gate Ave (5).
- How many cyclists were killed in Lone Mountain/USF?
- No deaths were reported in 38 reported bike crashes in Lone Mountain/USF from 2021–2026, and 6 left someone seriously hurt or killed.
- How do cyclists usually get hit in Lone Mountain/USF?
- 50% were side-impact crashes at junctions (drivers pulling out or turning across). 21% were sideswipes (close passes, right hooks, car doors). 11% were riders hit from behind. 16% happened after dark.
- How does Lone Mountain/USF compare with the rest of San Francisco?
- Lone Mountain/USF had 38 of the 2,412 bike crashes on the map in San Francisco, 2021–2026 (2%). That is a count, not a rate: a neighborhood with more people walking, shops and through traffic has more crashes without being riskier for each person. Lone Mountain/USF here is one of the Analysis Neighborhoods the City of San Francisco uses for its own statistics, built from Census tracts; its edges may differ from where residents put the neighborhood.
- Which streets in Lone Mountain/USF have the most bike crashes?
- Masonic Ave (18), Fell St (4), Geary Blvd (3), Golden Gate Ave (3), counted by the street each police report names first.
Nearby neighborhoods in San Francisco
Source: California Crash Reporting System (CCRS), 2021–2026. A crash counts toward the neighborhood whose outline holds its point. 36 of the 38 crashes here had no coordinates on the report and were placed at the intersection its street names give. Reports with neither coordinates nor usable street names aren't on the map, so these numbers are lower than the real total. Busy streets show more crashes partly because more people use them. Outline: DataSF, Analysis Neighborhoods. Data last rebuilt 2026-10-07. How the data works.