Car crash statistics in Portola Valley, 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: 77 crashes were reported in Portola Valley from 2021–2025, 42 with an injury. 55% (California: 40%) of crashes injured someone. 14% (California: 25%) were hit-and-run.

• 55% (California: 40%) of crashes injured someone.
• 14% (California: 25%) were hit-and-run.
• 16% (California: 26%) happened between 8 p.m. and 6 a.m.
• The busiest hour was 12 p.m. (California: 5 p.m.).

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 77 crashes. It is the officer's judgement at the scene.

• Unsafe speed30% · 23
• Failing to yield at an intersection or to turn21% · 16
• Unsafe turning or lane change14% · 11
• Driving under the influence13% · 10
• Unsafe starting or backing5% · 4

By type of collision: hit object 34%, other 23%, rear end 13%, broadside 12%.

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

• 2 crashes (3%) involved a pedestrian.
• 22 crashes (29%) involved a bicyclist.
• 2 crashes (3%) involved a motorcyclist.

How many car accidents happen in Portola Valley each year?

Reported crashes in Portola Valley: 2021: 20, 2022: 15, 2023: 17, 2024: 10, 2025: 15. 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 Portola Valley?

The busiest hour for reported crashes in Portola Valley is 12 p.m.. 16% (California: 26%) happened between 8 p.m. and 6 a.m.

What causes crashes in Portola Valley?

The main cause the reporting officer recorded, as a share of all 77 crashes: unsafe speed 30%, failing to yield at an intersection or to turn 21%, unsafe turning or lane change 14%, driving under the influence 13%, unsafe starting or backing 5%.

How many people were killed in crashes in Portola Valley?

No deaths were reported in 77 reported crashes in Portola Valley from 2021–2025, and 42 crashes injured someone.

How many crashes in Portola Valley involve pedestrians, cyclists or motorcyclists?

2 involved a pedestrian (3%), 22 involved a bicyclist (29%), 2 involved a motorcyclist (3%), of 77 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.