Motorcycle crash statistics and hotspots in South San Francisco, CA
- motorcycle crashes, 2021–2026
- 92
- motorcycle crashes, 2021–2026
- serious or fatal
- 25
- serious or fatal
- fatal
- 2
- fatal
- street with the most
- US-101
- street with the most
Where they cluster
All 10 spots, explainedIs South San Francisco safe to ride a motorcycle?
This page covers traffic crashes, not crime. 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: 92 motorcycle crashes were reported in South San Francisco from 2021–2026, 25 of them serious or fatal (2 fatal). The most were at Grand Ave & Sylvester Rd (4). 36% involved no other vehicle, usually running wide or losing grip. 9% involved a car turning left across the rider.
Where to look next
How motorcyclists crash in South San Francisco
- 36% involved no other vehicle, usually running wide or losing grip.
- 9% involved a car turning left across the rider.
- 16% happened after dark.
What the reports show about motorcycle crashes in South San Francisco
- 16% (California: 25%) of crashes happened after dark.
- 39% (California: 80%) were on roads posted 40 mph or faster.
- 27% (California: 28%) left someone seriously hurt or killed.
- The busiest hour was 3 p.m. (California: 5 p.m.).
- 4% (California: 2%) were on a wet road, as the report records it.
- The reports name something about the road itself in 5 crashes: a construction or repair zone (3) and holes or deep ruts (2).
Set against all motorcycle crashes in California, 2021–2026. Without traffic counts these can't say how risky a street is.
Where motorcycle crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
- 014 crashes · 3 serious or fatal
Grand Ave & 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.
- 024 crashes · 2 serious or fatal
Lux Ave & Cypress Ave
Falls and fixed objects
3 of 4 crashes were a fall or hitting an object, with no other vehicle involved. Traffic is posted at about 65 mph.
- Enter slower than feels necessary and watch for gravel, sand and diesel. Look through the bend.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
- 033 crashes · 2 serious or fatal
San Mateo Ave & Lowrie Ave
Close passes and cars turning alongside
2 of 3 crashes were sideswipes: a vehicle alongside, typically a close pass, a right hook, or an opening car door.
- Don't linger in drivers' blind spots, and watch for cars changing lanes or turning into driveways alongside you.
- 045 crashes · 1 serious or fatal
Airport Blvd & US-101
Close passes and cars turning alongside
2 of 5 crashes were sideswipes: a vehicle alongside, typically a close pass, a right hook, or an opening car door. Traffic is posted at about 40 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.
- 053 crashes · 2 serious or fatal
Westborough Blvd & Gellert Blvd
A mix of crash types
- No single crash pattern stands out here. Ride within your sight distance and keep extra space.
- 064 crashes · 1 serious or fatal
Airport Blvd & 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.
- 075 crashes
Junipero Serra Blvd & Avalon Dr
Riders hit from behind
3 of 5 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.
- 083 crashes · 1 serious or fatal
US-101 & Airport Blvd
Falls and fixed objects
2 of 3 crashes were a fall or hitting an object, with no other vehicle involved. Traffic is posted at about 65 mph.
- Enter slower than feels necessary and watch for gravel, sand and diesel. Look through the bend.
- Traffic is fast here: at this speed you cross a junction in about a second, so scan early.
- 093 crashes · 1 serious or fatal
Westborough Blvd & SR-82
A mix of crash types
- No single crash pattern stands out here. Ride within your sight distance and keep extra space.
- 104 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.
Streets with the most motorcycle crashes in South San Francisco
| Street | Crashes | Serious/fatal |
|---|---|---|
| US-101 | 21 | 6 |
| Airport Blvd | 10 | 3 |
| Westborough Blvd | 9 | 4 |
| I-280 | 5 | 0 |
| SR-82 | 4 | 2 |
| Grand Ave | 4 | 2 |
| Junipero Serra Blvd | 4 | 1 |
| San Mateo Ave | 3 | 2 |
Reported motorcycle crashes, 2021–2026, counted by the street each police report names first, so a crash at a corner counts toward one of its two streets. Long, busy streets collect more crashes partly because more people use them.
What the police reports say drivers did in South San Francisco
| A driver… | Crashes | |
|---|---|---|
| drifted out of the lane or onto the wrong side | 7 | |
| turned or changed lanes when it wasn't clear | 6 | |
| ran a red light | 5 | |
| ran a stop sign or didn't yield after stopping | 4 | |
| didn't yield while turning left | 3 | |
| drove too fast for conditions | 3 |
The other vehicle, where the report names one: 37 cars, 11 SUVs, 3 pickup trucks, 1 bus, 1 minivan and 1 truck or semi. In 1 crash the report says the other driver had been drinking or was on drugs.
Reported motorcycle crashes, 2021–2026. The officer names one party and one Vehicle Code section as the main cause of each crash; these are the crashes where that party was a driver. It is the officer's reading at the scene, not a court's finding, and many reports name the person on foot or on a bike instead, which we don't list.
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 | |
| 2026to Oct 19 | 12 | 5 |
2026 runs to Oct 19, the newest report in the data, and police reports keep arriving for months, so it isn't a full year.
Common questions about South San Francisco
- Where do the most motorcycle crashes happen in South San Francisco?
- The worst spot is Grand Ave & Sylvester Rd, with 4 reported motorcycle crashes from 2021–2026, 3 of them serious or fatal. Next are Lux Ave & Cypress Ave (4) and San Mateo Ave & Lowrie Ave (3).
- How many motorcyclists were killed in South San Francisco?
- 2 crashes killed someone in 92 reported motorcycle crashes in South San Francisco from 2021–2026, and 25 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. 9% involved a car turning left across the rider. 16% happened after dark.
- When and where do motorcycle crashes happen in South San Francisco, compared with California?
- Of 92 reported motorcycle crashes in South San Francisco from 2021–2026: 16% (California: 25%) of crashes happened after dark. 39% (California: 80%) were on roads posted 40 mph or faster. 27% (California: 28%) left someone seriously hurt or killed. The busiest hour was 3 p.m. (California: 5 p.m.). 4% (California: 2%) were on a wet road, as the report records it. The reports name something about the road itself in 5 crashes: a construction or repair zone (3) and holes or deep ruts (2).
- Which streets in South San Francisco have the most motorcycle crashes?
- By the street each police report names first, 2021–2026: US-101 (21), Airport Blvd (10), Westborough Blvd (9), I-280 (5), SR-82 (4). Long, busy streets collect more crashes partly because more people use them.
- 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, 2026 (through Oct 19): 12. 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. A report with no coordinates is placed at the intersection its street names give; reports with neither are not counted, so the real totals are higher.
Nearby cities
Source: California Crash Reporting System (CCRS), 2021–2026. A report with no coordinates is placed at the intersection its street names give; reports with neither are not counted, 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 2026-10-22. How the data works.