Motorcycle crash hotspots in South San Francisco, CA
- motorcycle crashes, 2021–2025
- 80
- motorcycle crashes, 2021–2025
- serious or fatal
- 20
- serious or fatal
- fatal
- 2
- fatal
Is South San Francisco 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: 80 motorcycle crashes were reported in South San Francisco from 2021–2025, 20 of them serious or fatal (2 fatal). The most were at E Grand Av & Sylvester Rd (4). 36% involved no other vehicle, usually running wide or losing grip. 8% involved a car turning left across the rider.
How motorcyclists crash in South San Francisco
- 36% involved no other vehicle, usually running wide or losing grip.
- 8% involved a car turning left across the rider.
- 18% happened after dark.
- 11% were hit-and-run.
Where motorcycle crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
- 014 crashes · 3 serious or fatal
E Grand Av & Sylvester Rd
A mix of crash types
50% happened after dark.
- No single crash pattern stands out here. Ride within your sight distance and keep extra space.
- Wear bright or reflective gear and use your high beam where you can.
- 023 crashes · 2 serious or fatal
Westborough Bl & Gellert Bl
A mix of crash types
- No single crash pattern stands out here. Ride within your sight distance and keep extra space.
- 034 crashes · 1 serious or fatal
Airport Bl & San Mateo Ave
Riders hit from behind
2 of 4 crashes were rear-end: hit from behind. 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.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
- 043 crashes · 1 serious or fatal
Westborough Bl & SR-82
A mix of crash types
- No single crash pattern stands out here. Ride within your sight distance and keep extra space.
- 053 crashes · 1 serious or fatal
Lux Av & Cypress Av
Falls and fixed objects
2 of 3 crashes were a fall or hitting an object, with no other vehicle involved.
- Enter slower than feels necessary and watch for gravel, sand and diesel. Look through the bend.
- 064 crashes
Junipero Serra Bl & Avalon Dr
Riders hit from behind
2 of 4 crashes were rear-end: hit from behind. 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.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
- 074 crashes
I-280 & Westborough Blvd
Close passes and cars turning alongside
4 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. 50% were hit-and-run.
- 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.
- 084 crashes
Airport Bl & US-101
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 South San Francisco by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 13 | 5 | |
| 2022 | 20 | 3 | |
| 2023 | 16 | 3 | |
| 2024 | 17 | 5 | |
| 2025 | 14 | 4 |
Common questions about South San Francisco
- Where do the most motorcycle crashes happen in South San Francisco?
- The worst spot is E Grand Av & Sylvester Rd, with 4 reported motorcycle crashes from 2021–2025, 3 of them serious or fatal. Next are Westborough Bl & Gellert Bl (3) and Airport Bl & San Mateo Ave (4).
- How many motorcyclists were killed in South San Francisco?
- 2 crashes killed someone in 80 reported motorcycle crashes in South San Francisco from 2021–2025, and 20 left someone seriously hurt or killed.
- How do motorcyclists usually crash in South San Francisco?
- 36% involved no other vehicle, usually running wide or losing grip. 8% involved a car turning left across the rider. 18% happened after dark. 11% were hit-and-run.
- How many motorcycle crashes happen in South San Francisco each year?
- Reported motorcycle crashes with map locations: 2021: 13, 2022: 20, 2023: 16, 2024: 17, 2025: 14. 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.