Car crash statistics in Brentwood, 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: 1,761 crashes were reported in Brentwood from 2021–2025, 740 with an injury and 16 with a death. 42% (California: 40%) of crashes injured someone. 26% (California: 25%) were hit-and-run.

• 42% (California: 40%) of crashes injured someone.
• 26% (California: 25%) were hit-and-run.
• 27% (California: 26%) happened between 8 p.m. and 6 a.m.
• The busiest hour was 3 p.m. (California: 5 p.m.).
• 12% 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 1,761 crashes. It is the officer's judgement at the scene.

• Unsafe speed28% · 501
• Unsafe turning or lane change27% · 475
• Running a red light or stop sign8% · 148
• Driving under the influence8% · 134
• Failing to yield at an intersection or to turn6% · 97

By type of collision: rear end 26%, side swipe 21%, hit object 21%, broadside 17%.

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

• 61 crashes (3%) involved a pedestrian. See where they cluster
• 75 crashes (4%) involved a bicyclist. See where they cluster
• 35 crashes (2%) involved a motorcyclist. See where they cluster

How many car accidents happen in Brentwood each year?

Reported crashes in Brentwood: 2021: 359, 2022: 308, 2023: 327, 2024: 389, 2025: 378. 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 Brentwood?

The busiest hour for reported crashes in Brentwood is 3 p.m.. 27% (California: 26%) happened between 8 p.m. and 6 a.m.

What causes crashes in Brentwood?

The main cause the reporting officer recorded, as a share of all 1,761 crashes: unsafe speed 28%, unsafe turning or lane change 27%, running a red light or stop sign 8%, driving under the influence 8%, failing to yield at an intersection or to turn 6%.

How many people were killed in crashes in Brentwood?

16 crashes killed someone in 1,761 reported crashes in Brentwood from 2021–2025, and 740 crashes injured someone.

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

61 involved a pedestrian (3%), 75 involved a bicyclist (4%), 35 involved a motorcyclist (2%), of 1,761 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.