Bike crash hotspots in San Ramon, CA
94 bike crashes were reported in San Ramon from 2021–2025, 14 of them serious or fatal (2 fatal). Below are the spots where they keep happening, what usually goes wrong at each one, and what to watch for.
Also: Pedestrian crash hotspots in San Ramon (51 crashes)
How people on bikes get hit in San Ramon
- 56% were side-impact crashes at junctions (drivers pulling out or turning across).
- 12% were riders hit from behind.
- 9% happened after dark.
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
1. Bollinger Canyon Rd & Dougherty Rd
8 crashes · 1 serious or fatalA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
2. Bollinger Canyon Rd & Alcosta Bl
4 crashes · 2 serious or fatalA mix of crash types
50% happened after dark.
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
- → Use a front and rear light, even on lit streets.
3. Dougherty Rd & N Monarch Rd
3 crashes · 1 serious or fatal · 1 fatalSide-impact crashes at the junction
2 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.
4. Montevideo Dr & Iron Horse Trail
6 crashesSide-impact crashes at the junction
5 of 6 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.
5. Montevideo Dr & Iron Horse Trail
5 crashesSide-impact crashes at the junction
5 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.
6. Alcosta Bl & Overlook Dr
3 crashesA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
7. Broadmoor & St Dennis Dr
3 crashesSide-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.
8. Camino Ramon & Crow Canyon Rd
3 crashesSide-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.
9. Stoneleaf Rd & S Wedgewood Rd
3 crashesSide-impact crashes at the junction
2 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.
Bike crashes in San Ramon by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 18 | 3 | |
| 2022 | 22 | 2 | |
| 2023 | 23 | 4 | |
| 2024 | 14 | 2 | |
| 2025 | 17 | 3 |
Common questions about San Ramon
- Where do the most bike crashes happen in San Ramon?
- The worst spot is Bollinger Canyon Rd & Dougherty Rd, with 8 reported bike crashes from 2021–2025, 1 of them serious or fatal. Next are Bollinger Canyon Rd & Alcosta Bl (4) and Dougherty Rd & N Monarch Rd (3).
- How many cyclists were killed in San Ramon?
- 2 crashes killed someone in 94 reported bike crashes in San Ramon from 2021–2025, and 14 left someone seriously hurt or killed.
- How do cyclists usually get hit in San Ramon?
- 56% were side-impact crashes at junctions (drivers pulling out or turning across). 12% were riders hit from behind. 9% happened after dark.
- How many bike crashes happen in San Ramon each year?
- Reported bike crashes with map locations: 2021: 18, 2022: 22, 2023: 23, 2024: 14, 2025: 17. The latest year can rise as late reports come in.
- Where does this data come from?
- Police crash reports in the California Crash Reporting System (CCRS), published by the state on data.ca.gov. Only crashes reported with map coordinates are counted, so the real totals are higher.
Nearby cities
Source: California Crash Reporting System (CCRS), 2021–2025. Only crashes reported with map coordinates are counted, and many city police reports have none, so these numbers are lower than the real total. Busy streets show more crashes partly because more people use them. Data last rebuilt 2026-09-22. How the data works.