If it is happening now, or you are in danger, call 911.
Close passes, being run off the road, deliberate swerving, brake-checking, thrown objects, and shouted threats are traffic violations or crimes, not just bad manners. They are worth reporting even when nobody was hurt.
If a driver actually hit you, see If You Crash instead.
Without a plate number there is no incident to investigate. Get it if you can do so safely, along with the make, model, and color, the direction of travel, and the time and place. If you ride with a camera, save the file before it loops.
Never follow a driver to get their plate.
Did you get the plate?
Which agency depends on where it happened.
| Where | Report to |
|---|---|
| A Walnut Creek city street | Walnut Creek Police, non-emergency 925-943-5844, option 2 |
| Unincorporated county roads, I-680, SR-24, SR-242, SR-4 | CHP, 1-800-TELL-CHP (1-800-835-5247) |
| A regional trail | East Bay Regional Park District, 510-881-1833, or the Park Watch Report form |
Report these by phone. Walnut Creek's online crime reporting cannot be used when you know who the suspect is, and a license plate makes them known.
Walnut Creek Police contacts, hours, and address · Notify the CHP
A single incident with no plate cannot be investigated, but a location that keeps producing them can be worked on. Walnut Creek Police can direct enforcement to a specific spot and time if they know where and when.
If the street design is what forces the conflict — a lane that disappears, a crossing with no visibility — report that too, on Road Hazards.
Reporting to the agency is what gets one driver dealt with. Telling us is what helps us see the pattern, and the locations that come up again and again are the ones we take to the city.
Paste in what you reported and where it happened.