Bike crash hotspots in Diamond Bar, CA
24 bike crashes were reported in Diamond Bar from 2021–2025, 1 of them serious or 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 Diamond Bar (54 crashes)
How people on bikes get hit in Diamond Bar
- 54% were side-impact crashes at junctions (drivers pulling out or turning across).
- 13% were riders hit from behind.
- 21% 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. Diamond Bar Bl & Palomino Dr
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. 40% happened after dark. Traffic is posted at about 65 mph.
- → 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.
- → Use a front and rear light, even on lit streets.
- → Traffic is fast here. A quieter parallel street is often worth the extra minutes.
Bike crashes in Diamond Bar by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 3 | 0 | |
| 2022 | 3 | 0 | |
| 2023 | 7 | 0 | |
| 2024 | 5 | 0 | |
| 2025 | 6 | 1 |
Common questions about Diamond Bar
- Where do the most bike crashes happen in Diamond Bar?
- The worst spot is Diamond Bar Bl & Palomino Dr, with 5 reported bike crashes from 2021–2025.
- How many cyclists were killed in Diamond Bar?
- No deaths were reported in 24 reported bike crashes in Diamond Bar from 2021–2025, and 1 left someone seriously hurt or killed.
- How do cyclists usually get hit in Diamond Bar?
- 54% were side-impact crashes at junctions (drivers pulling out or turning across). 13% were riders hit from behind. 21% happened after dark. 13% were hit-and-run.
- How many bike crashes happen in Diamond Bar each year?
- Reported bike crashes with map locations: 2021: 3, 2022: 3, 2023: 7, 2024: 5, 2025: 6. 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.