Car crash statistics in Sunnyvale, CA

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. This page covers traffic crashes, not crime. What the records show: 5,339 crashes were reported in Sunnyvale from 2021–2025, 2,032 with an injury and 22 with a death. 38% (California: 40%) of crashes injured someone. 27% (California: 25%) were hit-and-run.

• 38% (California: 40%) of crashes injured someone.
• 27% (California: 25%) were hit-and-run.
• 23% (California: 26%) happened between 8 p.m. and 6 a.m.
• The busiest hour was 5 p.m. (California: 5 p.m.).
• 29% were on a freeway.

Set against all reported crashes in California, 2021–2025. Without traffic counts these can't say how risky a street is.

The main cause the reporting officer recorded, as a share of all 5,339 crashes. It is the officer's judgement at the scene.

• Unsafe speed37% · 1,956
• Unsafe turning or lane change20% · 1,067
• Failing to yield at an intersection or to turn8% · 423
• Driving under the influence7% · 356
• Running a red light or stop sign6% · 319

By type of collision: rear end 37%, side swipe 20%, broadside 18%, hit object 16%.

The latest year can rise as late reports come in, and some police departments file months late.

• 163 crashes (3%) involved a pedestrian. See where they cluster
• 223 crashes (4%) involved a bicyclist. See where they cluster
• 87 crashes (2%) involved a motorcyclist. See where they cluster

How many car accidents happen in Sunnyvale each year?

Reported crashes in Sunnyvale: 2021: 839, 2022: 1,018, 2023: 1,110, 2024: 1,163, 2025: 1,209. The latest year can rise as late reports come in, and some police departments file their reports months late.

What time do most crashes happen in Sunnyvale?

The busiest hour for reported crashes in Sunnyvale is 5 p.m.. 23% (California: 26%) happened between 8 p.m. and 6 a.m.

What causes crashes in Sunnyvale?

The main cause the reporting officer recorded, as a share of all 5,339 crashes: unsafe speed 37%, unsafe turning or lane change 20%, failing to yield at an intersection or to turn 8%, driving under the influence 7%, running a red light or stop sign 6%.

How many people were killed in crashes in Sunnyvale?

22 crashes killed someone in 5,339 reported crashes in Sunnyvale from 2021–2025, and 2,032 crashes injured someone.

How many crashes in Sunnyvale involve pedestrians, cyclists or motorcyclists?

163 involved a pedestrian (3%), 223 involved a bicyclist (4%), 87 involved a motorcyclist (2%), of 5,339 reported crashes from 2021–2025.

Where does this data come from?

Police crash reports in the California Crash Reporting System (CCRS), published by the state on data.ca.gov. Every reported crash is counted, whatever the vehicles, and no locations are used.