Motorcycle crash hotspots in San Dimas, CA
- motorcycle crashes, 2021–2025
- 44
- motorcycle crashes, 2021–2025
- serious or fatal
- 13
- serious or fatal
- fatal
- 4
- fatal
Is San Dimas safe to ride a motorcycle?
We don't rate cities 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: 44 motorcycle crashes were reported in San Dimas from 2021–2025, 13 of them serious or fatal (4 fatal). The most were at SR-57 (Orange Fwy) & Arrow Highway (5). 30% involved no other vehicle, usually running wide or losing grip. 11% involved a car turning left across the rider.
How motorcyclists crash in San Dimas
- 30% involved no other vehicle, usually running wide or losing grip.
- 11% involved a car turning left across the rider.
- 43% happened after dark.
Where motorcycle crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
- 015 crashes · 1 serious or fatal
SR-57 (Orange Fwy) & Arrow Highway
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. 80% happened after dark. Traffic is posted at about 65 mph.
- Cover your brakes through the junction and watch the front wheels of cars waiting to pull out or turn left. Drivers misjudge how fast a motorcycle is coming.
- Wear bright or reflective gear and use your high beam where you can.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
- 024 crashes · 1 serious or fatal
SR-57 (Orange Fwy) & Via Verde
Riders hit from behind
3 of 4 crashes were rear-end: hit from behind. 50% happened after dark. Traffic is posted at about 65 mph.
- Check your mirrors when slowing, flash your brake light, and leave an escape gap when you stop in traffic.
- Wear bright or reflective gear and use your high beam where you can.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
- 034 crashes · 1 serious or fatal
SR-210 (Foothill Fwy) & Lone Hill Ave
Close passes and cars turning alongside
2 of 4 crashes were sideswipes: a vehicle alongside, typically a close pass, a right hook, or an opening car door. Traffic is posted at about 65 mph.
- Don't linger in drivers' blind spots, and watch for cars changing lanes or turning into driveways alongside you.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
Motorcycle crashes in San Dimas by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 8 | 2 | |
| 2022 | 6 | 4 | |
| 2023 | 10 | 2 | |
| 2024 | 12 | 4 | |
| 2025 | 8 | 1 |
Common questions about San Dimas
- Where do the most motorcycle crashes happen in San Dimas?
- The worst spot is SR-57 (Orange Fwy) & Arrow Highway, with 5 reported motorcycle crashes from 2021–2025, 1 of them serious or fatal. Next are SR-57 (Orange Fwy) & Via Verde (4) and SR-210 (Foothill Fwy) & Lone Hill Ave (4).
- How many motorcyclists were killed in San Dimas?
- 4 crashes killed someone in 44 reported motorcycle crashes in San Dimas from 2021–2025, and 13 left someone seriously hurt or killed.
- How do motorcyclists usually crash in San Dimas?
- 30% involved no other vehicle, usually running wide or losing grip. 11% involved a car turning left across the rider. 43% happened after dark.
- How many motorcycle crashes happen in San Dimas each year?
- Reported motorcycle crashes with map locations: 2021: 8, 2022: 6, 2023: 10, 2024: 12, 2025: 8. 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. Freeway crashes are included: many motorcycle crashes in cities happen on them. Busy streets show more crashes partly because more people use them. Data last rebuilt 2026-09-22. How the data works.