Car crash statistics in South San Francisco, 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: 2,901 crashes were reported in South San Francisco from 2021–2025, 1,243 with an injury and 18 with a death. 43% (California: 40%) of crashes injured someone. 38% (California: 25%) were hit-and-run.

• 43% (California: 40%) of crashes injured someone.
• 38% (California: 25%) were hit-and-run.
• 28% (California: 26%) happened between 8 p.m. and 6 a.m.
• The busiest hour was 5 p.m. (California: 5 p.m.).
• 28% 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 2,901 crashes. It is the officer's judgement at the scene.

• Unsafe turning or lane change26% · 740
• Unsafe speed20% · 586
• Driving under the influence12% · 352
• Straying from the lane or driving on the wrong side9% · 258
• Failing to yield at an intersection or to turn6% · 180

By type of collision: side swipe 32%, rear end 26%, hit object 15%, broadside 13%.

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

• 138 crashes (5%) involved a pedestrian. See where they cluster
• 85 crashes (3%) involved a bicyclist. See where they cluster
• 80 crashes (3%) involved a motorcyclist. See where they cluster

How many car accidents happen in South San Francisco each year?

Reported crashes in South San Francisco: 2021: 576, 2022: 642, 2023: 623, 2024: 600, 2025: 460. 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 South San Francisco?

The busiest hour for reported crashes in South San Francisco is 5 p.m.. 28% (California: 26%) happened between 8 p.m. and 6 a.m.

What causes crashes in South San Francisco?

The main cause the reporting officer recorded, as a share of all 2,901 crashes: unsafe turning or lane change 26%, unsafe speed 20%, driving under the influence 12%, straying from the lane or driving on the wrong side 9%, failing to yield at an intersection or to turn 6%.

How many people were killed in crashes in South San Francisco?

18 crashes killed someone in 2,901 reported crashes in South San Francisco from 2021–2025, and 1,243 crashes injured someone.

How many crashes in South San Francisco involve pedestrians, cyclists or motorcyclists?

138 involved a pedestrian (5%), 85 involved a bicyclist (3%), 80 involved a motorcyclist (3%), of 2,901 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.