Bike crash hotspots in San Dimas, CA
40 bike crashes were reported in San Dimas from 2021–2025, 11 of them serious or fatal (1 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 Dimas (23 crashes)
How people on bikes get hit in San Dimas
- 40% were side-impact crashes at junctions (drivers pulling out or turning across).
- 10% were sideswipes (close passes, right hooks, car doors).
- 13% were riders hit from behind.
- 13% happened after dark.
- 13% were hit-and-run.
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
1. Lone Hill Av & Kent St
5 crashesSide-impact crashes at the junction
3 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.
2. Arrow Hwy & Lonehill Av
3 crashesA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
3. Via Verde & Rt 57
3 crashesA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
Bike crashes in San Dimas by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 7 | 3 | |
| 2022 | 8 | 3 | |
| 2023 | 11 | 2 | |
| 2024 | 5 | 1 | |
| 2025 | 9 | 2 |
Common questions about San Dimas
- Where do the most bike crashes happen in San Dimas?
- The worst spot is Lone Hill Av & Kent St, with 5 reported bike crashes from 2021–2025. Next are Arrow Hwy & Lonehill Av (3) and Via Verde & Rt 57 (3).
- How many cyclists were killed in San Dimas?
- 1 crash killed someone in 40 reported bike crashes in San Dimas from 2021–2025, and 11 left someone seriously hurt or killed.
- How do cyclists usually get hit in San Dimas?
- 40% were side-impact crashes at junctions (drivers pulling out or turning across). 10% were sideswipes (close passes, right hooks, car doors). 13% were riders hit from behind. 13% happened after dark. 13% were hit-and-run.
- How many bike crashes happen in San Dimas each year?
- Reported bike crashes with map locations: 2021: 7, 2022: 8, 2023: 11, 2024: 5, 2025: 9. 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.