Bike crash statistics and hotspots in Union City, CA
- bike crashes, 2021–2026
- 60
- bike crashes, 2021–2026
- serious or fatal
- 3
- serious or fatal
- fatal
- 1
- fatal
- street with the most
- Alvarado Niles Rd
- street with the most
Is Union City safe to ride a bike?
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: 60 bike crashes were reported in Union City from 2021–2026, 3 of them serious or fatal (1 fatal). The most were at Decoto Rd & Alvarado Niles Rd (7). 67% were side-impact crashes at junctions (drivers pulling out or turning across). 12% were sideswipes (close passes, right hooks, car doors).
Where to look next
How people on bikes get hit in Union City
- 67% were side-impact crashes at junctions (drivers pulling out or turning across).
- 12% were sideswipes (close passes, right hooks, car doors).
- 25% happened after dark.
What the reports show about bike crashes in Union City
- 25% (California: 21%) of crashes happened after dark.
- 5% (California: 13%) left someone seriously hurt or killed.
- The busiest hour was 2 p.m. (California: 3 p.m.).
Set against all bike crashes in California, 2021–2026. Without traffic counts these can't say how risky a street is.
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
- 017 crashes
Decoto Rd & Alvarado Niles Rd
Side-impact crashes at the junction
4 of 7 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. 43% happened after dark.
- 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.
- 025 crashes · 1 serious or fatal
Alvarado Niles Rd & Medallion Dr
Side-impact crashes at the junction
4 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. 60% happened after dark.
- 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.
- 036 crashes
Alvarado Niles Rd & Dyer St
Side-impact crashes at the junction
5 of 6 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.
- 044 crashes
Decoto Rd & Royal Ann Dr
Crashes with people on foot
2 of 4 crashes were with a pedestrian.
- Slow down near crossings and on shared paths, and give people walking plenty of room.
- 054 crashes
Alvarado Niles Rd & Central Ave
Side-impact crashes at the junction
2 of 4 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. 50% happened after dark.
- 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.
- 063 crashes
Mission Blvd & Decoto Rd
Side-impact crashes at the junction
2 of 3 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.
Streets with the most bike crashes in Union City
| Street | Crashes | Serious/fatal |
|---|---|---|
| Alvarado Niles Rd | 14 | 0 |
| Decoto Rd | 11 | 0 |
| Dyer St | 6 | 0 |
| Mission Blvd | 4 | 0 |
| Union City Blvd | 3 | 1 |
Reported bike 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.
Bike crashes in Union City by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 8 | 0 | |
| 2022 | 11 | 0 | |
| 2023 | 14 | 3 | |
| 2024 | 11 | 0 | |
| 2025 | 11 | 0 | |
| 2026 | 5 | 0 |
How people get to work in Union City
| Share of workers | Union City | California |
|---|---|---|
| Drive alone | 60% | 65.7% |
| Carpool | 14.7% | 9.5% |
| Public transit | 3.8% | 2.9% |
| Walk | 0.8% | 2.4% |
| Bicycle | 0.2% | 0.7% |
| Work from home | 18.6% | 17.2% |
5.9% of households in Union City have no car (California: 7.1%). The average trip to work takes 31.9 minutes one way (California: 28.7).
US Census American Community Survey, 2020–2024 five-year estimates, 67,464 residents. These are trips to work only: walks to school, the shops or a bus stop aren't counted, so they can't say how much walking or riding happens on Union City's streets.
Common questions about Union City
- Where do the most bike crashes happen in Union City?
- The worst spot is Decoto Rd & Alvarado Niles Rd, with 7 reported bike crashes from 2021–2026. Next are Alvarado Niles Rd & Medallion Dr (5) and Alvarado Niles Rd & Dyer St (6).
- How many cyclists were killed in Union City?
- 1 crash killed someone in 60 reported bike crashes in Union City from 2021–2026, and 3 left someone seriously hurt or killed.
- How do cyclists usually get hit in Union City?
- 67% were side-impact crashes at junctions (drivers pulling out or turning across). 12% were sideswipes (close passes, right hooks, car doors). 25% happened after dark.
- When and where do bike crashes happen in Union City, compared with California?
- Of 60 reported bike crashes in Union City from 2021–2026: 25% (California: 21%) of crashes happened after dark. 5% (California: 13%) left someone seriously hurt or killed. The busiest hour was 2 p.m. (California: 3 p.m.).
- Which streets in Union City have the most bike crashes?
- By the street each police report names first, 2021–2026: Alvarado Niles Rd (14), Decoto Rd (11), Dyer St (6), Mission Blvd (4), Union City Blvd (3). Long, busy streets collect more crashes partly because more people use them.
- How many people bike to work in Union City?
- 0.2% of workers in Union City ride a bicycle to work (California: 0.7%), and 3.8% take public transit. 5.9% of households have no car (California: 7.1%). From the Census American Community Survey, 2020–2024.
- How many bike crashes happen in Union City each year?
- Reported bike crashes with map locations: 2021: 8, 2022: 11, 2023: 14, 2024: 11, 2025: 11, 2026: 5. 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.
Bike climbs near Union City
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. Busy streets show more crashes partly because more people use them. Data last rebuilt 2026-10-07. How the data works.