Jerk Alert
California license plate

In danger right now? Call 911. Do not use this site or the app while you are driving.

Reporting a bad driver in California

Checked 13 September 2026 · 3 sources · Jerk Alert LLC’s 51-location study

Active dangerCan I report a dangerous driver in California while they are still on the road?
Call 911.
Or 1-800-TELL-CHP (1-800-835-5247) — California Highway Patrol’s non-emergency line.
Details in section 1
Recent IncidentIt already happened — who takes the report?
The non-emergency line of your local California police.Details in section 2
Licence reviewCan I report a dangerous driver to the California Department of Motor Vehicles?
Yes — citizens can report dangerous driversDetails in section 3

Look up a California plate

See whether other drivers have filed reports against a plate.

A plate with no reports comes back clean — that is the common result, and it is not an error.

Avoidance & safety rules

Does a Jerk Alert report reach the California Department of Motor Vehicles? No — Jerk Alert filings are community records between drivers. They never reach the California Department of Motor Vehicles, any other government body, or law enforcement, and they do not replace the calls in sections 1 and 2. If you are in danger, call 911. The Terms prohibit following, approaching, or identifying another driver on any Jerk Alert platform.

California bad driver reporting & safety guide

1. If it is happening now immediate danger

Emergency hotlines

  • 911 — for a driver who is an active danger to other people right now. That is a police matter, and no app is a substitute for the call.
  • 1-800-TELL-CHP (1-800-835-5247) — California Highway Patrol’s non-emergency number for the public in California.

A non-emergency line is not for a driver who is a danger right now — for that, call 911. CHP designates this number as the public's point of contact for non-emergency purposes — accident reports, tow questions, CHP office locations, vehicle theft tips, community outreach programs — and says personnel answer it 24 hours a day, seven days a week. CHP's stated aim is that fewer non-emergency calls go to cellular 9-1-1.

2. Reporting to California law enforcement after the fact

Neither the hotlines above nor anything in this section is the licence-review route in section 3, and nothing filed on Jerk Alert reaches any of them.

Who takes the report in California

  • The non-emergency line of the California municipal police department or county sheriff’s office with jurisdiction where it happened takes reports of dangerous driving that has already happened.
  • Bring: the plate (full or partial) and state, the vehicle’s make, model and colour, the location, the date and time, the direction of travel, and what you saw.
  • Expect a record rather than a ticket. An officer who did not witness the driving usually cannot cite for it, and what each agency acts on varies.

3. State DMV & licensing agency review

Public reporting accessYes — citizens can report dangerous drivers

A named form a member of the public can file with the licensing agency.

Who can file: Anyone. DS 699's relationship boxes are relative, friend, caregiver, vision specialist, court/code, or other, and DMV says its reexaminations rest on observations from peace officers, physicians, family members, relatives, acquaintances or other persons.

Administrative fitness process

Agency
California Department of Motor Vehicles
Unit
Driver Safety Branch
Form
DS 699 — Request for Driver Reexamination (Rev. 10/2024)
Where to send
Northern California (north of Fresno County): Sacramento Driver Safety, 4700 Broadway, 2nd Floor, Sacramento CA 95820-1501. Southern California (south of Fresno County): El Segundo Driver Safety, 390 N. Pacific Coast Highway, Ste. 2075, El Segundo CA 90245-4470.
Contact
Email the completed form to DMVLADDSOffice@dmv.ca.gov, or mail it to the Driver Safety office for your half of the state. A letter written instead of the form goes to your local Driver Safety office.

What information do I need to report a driver?

  • Sign the request. The form says plainly: "Unsigned reports will not be considered."
  • The driver's city, state and ZIP are required fields too; their telephone number and driver licence number are optional.
  • Required fields about you are your printed name, your mailing address, your signature and the date.
  • Tick the Driver Condition and Driver Behavior boxes you have observed, and use the space provided to describe the conditions or actions that led you to believe the driver should be reevaluated by DMV.
  • A letter to your local Driver Safety office identifying the driver you want to report and giving your reasons is accepted as an alternative to the form.

DMV can reexamine a driver when information suggests they do not have the knowledge or skill necessary to drive safely — including, in the DMV's own answer, a driver who does not have a medical problem but whose driving skills are nevertheless deteriorating. Information about the driver's age is not considered relevant, and DMV will not reexamine a driver solely on the basis of age.

Will the driver find out who reported them?

Each request must be signed for authentication, but you may request that your name not be revealed to the individual being reported — it is a box you tick on page 2 of the form, and DMV says confidentiality will be honoured to the fullest extent possible. Records received by DMV which report a physical or mental condition are confidential and cannot be made public under California Vehicle Code §1808.5 unless mandated by law. Nothing DMV publishes says whether the driver is told who filed.

What can the California Department of Motor Vehicles do after a report?

  • After a reexamination the DMV Driver Safety Hearing Officer may, under Vehicle Code §14250, place the driving privilege on probation in lieu of suspension or revocation, or take one or more of the actions below.
  • No action — the condition or the driving record does not warrant an action against the driving privilege.
  • Medical probation — the driver or their physician must submit a Driver Medical Evaluation (DS 326), completed by the physician, to DMV on specified dates.
  • Calendar reexamination — the driver must appear for a follow-up reexamination.
  • Restriction — the driver may only drive under specific conditions, such as during daylight hours, within certain geographical areas, or with specialised equipment in the vehicle.
  • Suspension — the driving privilege is suspended for an indefinite period, and can be reinstated if the driver shows they are compensating for the condition or that their driving no longer presents a safety risk.
  • Revocation — the driving privilege is terminated, generally where the condition is so severe that improvement seems unlikely or a driving incident is so severe that the driver presents a safety risk.
  • DMV can take an immediate action to suspend or revoke where a physical or mental condition presents an immediate threat to public safety.
  • A driver who does not appear for the reexamination has their driving privilege suspended under CVC §13801 until they appear and complete it.
  • DMV notifies the driver in writing of any action taken and of their legal rights, including the right to an administrative hearing.

Statutory authority: California Code of Regulations §100.01; Vehicle Code §§12818, 13800 and 13801 (Driver Safety investigations and reexaminations); Vehicle Code §14250 (the actions a Driver Safety Hearing Officer may take); Vehicle Code §1808.5 (records reporting a physical or mental condition are confidential).

What this route can and cannot do

California is one of the few states whose process covers observed driving behaviour and not only medical impairment: DS 699 carries a Driver Behavior checklist — drives in the wrong lane, acts violent or aggressive when driving, turns in front of on-coming cars — and DMV answers "Yes" to whether it can reexamine a driver who has no medical problem but whose driving skills are deteriorating. It is still a fitness-to-drive referral: the form takes a plate number "if available" and will accept an approximate age instead of a date of birth, but the driver's name and street address are required fields that a witness holding only a plate does not have, and the remedy is reexamining whether the driver is competent — a test a capable but aggressive driver passes.