What to Do Immediately After a Car Accident in California: A Step-by-Step Guide

Almost every contested element of a California injury claim — fault, severity, credibility, damages — is decided by evidence created or destroyed in the first 60 minutes after impact. Skid marks fade. Witnesses leave. Adrenaline masks pain. The photographs and statements captured at the scene routinely outweigh everything assembled in the months that follow.

The legal duty starts before the analysis. California Vehicle Code § 20002 requires every driver involved in a collision causing property damage to immediately stop, exchange identifying information, and locate the owner of any damaged property. Vehicle Code § 20001 imposes the same duty in collisions involving injury or death, with criminal penalties for failure to stop. Vehicle Code § 16025 requires every driver involved in a reportable collision to exchange evidence of financial responsibility — driver's license, vehicle registration, and proof of insurance. Skipping any of these steps is independently actionable.

Safety comes first. If the vehicles are drivable and you are uninjured, move them out of the active traffic lane to the shoulder under Vehicle Code § 22651 — leaving a drivable vehicle in a live lane creates secondary-collision liability. Turn on hazard lights. Check yourself and passengers for injuries before stepping out, particularly for hidden injuries (whiplash, concussion, internal bleeding) that adrenaline initially masks. If anyone reports head pain, neck pain, dizziness, confusion, or any loss of consciousness — call 911 and request paramedics, not just police.

Call 911 and request a police response. Vehicle Code § 20008 requires a written report to the CHP or local agency within 24 hours for any collision causing injury or death; the police response satisfies the reporting obligation and produces a CHP 555 or equivalent traffic-collision report that becomes the foundational document of the claim. If officers decline to respond to a minor-property-damage-only crash (common in busy urban jurisdictions), file an SR-1 with the DMV within 10 days under Vehicle Code § 16000 — required for any collision involving injury, death, or property damage over $1,000.

Document the scene before anything moves. Photograph all vehicles from multiple angles (wide, mid, close), every point of damage, all license plates, the position of the vehicles on the roadway, skid marks, debris fields, broken glass patterns, traffic-control devices (lights, signs, lane markings), road conditions, weather, the direction of travel of each vehicle, and any nearby surveillance cameras (gas stations, ATMs, doorbell cameras, business signage). Photograph the other driver's license, registration, and insurance card. Photograph any visible injuries on yourself and passengers. Take more than feels necessary — these images cannot be recreated.

What never to say at the scene

Do not say 'I'm sorry,' 'I didn't see you,' 'I'm fine,' or 'I'm not hurt.' Apologies are admissible as party admissions under Evidence Code § 1220. Statements about not seeing the other vehicle are routinely cited as admissions of inattention. Statements that you are uninjured become impeachment evidence months later when soft-tissue, cervical-disc, or concussive symptoms fully manifest — many serious injuries do not present until 24–72 hours after impact. Limit on-scene communication to factual exchange of identifying information and basic logistics. Decline to discuss fault, speed, distance, or injuries.

Witnesses are perishable evidence

Witnesses leave within minutes and are often impossible to locate later. The police report frequently captures only one or two of the witnesses actually present. Approach every visible bystander, ask politely whether they saw what happened, and capture their full name, phone number, email, and a brief description of what they observed. A 30-second smartphone voice memo of the witness describing what they saw — with their consent — is admissible as a past recollection recorded under Evidence Code § 1237 and is dramatically more persuasive than a recollection reconstructed months later.

Get medical evaluation the same day

Same-day medical evaluation is the single highest-leverage decision after the crash. Even if you feel fine, an emergency department or urgent care visit creates contemporaneous documentation of the mechanism of injury, the body parts involved, and any symptoms — the cornerstone of every later medical bill, diagnostic study, and treatment plan. Any gap between the crash and the first medical visit will be argued by the adverse carrier as evidence the injuries were minor or unrelated. A 24-hour gap is defensible; a two-week gap is materially harder to overcome.

• Move to safety; call 911 and request police plus paramedics if anyone is hurt.
• Photograph everything — vehicles, scene, plates, IDs, insurance cards, injuries, road conditions.
• Exchange information under Veh. Code § 16025 — do not discuss fault.
• Capture witness contact information before they leave the scene.
• File an SR-1 with the DMV within 10 days for any injury or property damage over $1,000.
• Seek same-day medical evaluation — gaps in treatment are the adverse carrier's favorite argument.

The first 60 minutes outweigh the next 60 days Skid marks fade within hours. Surveillance footage from nearby businesses is typically overwritten within 24–72 hours. Witnesses scatter within minutes. The contemporaneous photos, names, and medical records captured in the first hour after impact routinely decide claims worth multiples of what the rest of the file contributes.

Related Article: Car Accidents Involving Uber or Lyft in California: Who Pays and How to File a Claim If a rideshare driver is involved, the scene steps shift to capture the app status and trip data. Read the rideshare-specific guide at /articles/rideshare-accident-uber-lyft-california.

Related Article: Back and Spine Injuries from Car Accidents: What California Victims Need to Know Back and spine injuries often present hours after the scene — knowing the warning signs at the collision is critical. Read the full spine-injury guide at /articles/back-injury-car-accident-california.

Frequently Asked Questions

Q: What should I do in the first few minutes after a car accident? A: Move to safety if the vehicles are drivable, turn on hazard lights, check yourself and passengers for injuries, and call 911. Request both police and paramedics if anyone reports head, neck, or back pain or any loss of consciousness. Photograph the scene before anything moves. Exchange driver's license, registration, and insurance information under Vehicle Code § 16025. Identify witnesses and capture their contact information. Do not discuss fault, do not apologize, and do not characterize your injuries.

Q: Do I have to call the police after a car accident in California? A: California Vehicle Code § 20008 requires a written report to law enforcement within 24 hours for any collision causing injury or death. A police response on scene satisfies that obligation and produces a CHP 555 or equivalent collision report. For property-damage-only crashes where officers decline to respond, file an SR-1 with the DMV within 10 days under Vehicle Code § 16000 for any collision involving injury, death, or property damage over $1,000. Failure to report is a separate Vehicle Code violation and can result in license suspension.

Q: What information do I need to exchange with the other driver? A: Under Vehicle Code § 16025, every driver involved must exchange driver's license number, full name and current address, vehicle registration information, and evidence of financial responsibility (insurance card or equivalent). Vehicle Code § 20002 also requires identifying the owner of any damaged property if different from the driver. Take photographs of each document rather than relying on handwritten exchange — handwriting errors, fake names, and missing digits are common.

Q: What should I never say at the scene of an accident? A: Do not say 'I'm sorry,' 'I didn't see you,' 'I'm fine,' or 'I'm not hurt.' Apologies are admissible as party admissions under Evidence Code § 1220. Statements about not seeing the other vehicle are treated as admissions of inattention. Statements that you are uninjured become impeachment evidence later when delayed-onset injuries (whiplash, concussion, cervical disc, soft-tissue) manifest in the days following the crash. Limit scene communication to factual exchange of identifying information.

Q: Should I go to the hospital even if I feel fine? A: In almost every case, yes. Adrenaline routinely masks the pain of soft-tissue injuries, whiplash, concussions, and even fractures for hours after impact. An emergency department or urgent-care visit on the day of the crash creates contemporaneous documentation of the mechanism of injury and any presenting symptoms, which becomes the foundation of every later treatment plan and damages claim. Any gap between the crash and the first medical visit will be argued by the adverse carrier as evidence the injuries were minor or unrelated.

Q: How long do I have to report a car accident in California? A: California Vehicle Code § 20008 requires reporting to law enforcement within 24 hours for any collision causing injury or death. Vehicle Code § 16000 requires filing an SR-1 with the DMV within 10 days for any collision causing injury, death, or property damage exceeding $1,000. Notifying your own insurance carrier should occur promptly — most policies require notice 'as soon as practicable.' Missing any of these deadlines can independently jeopardize coverage and licensing status.

Q: What photos should I take at the scene? A: Photograph all vehicles from multiple angles (wide-scene, mid-range, close-up of damage), every point of damage on every vehicle, all license plates, the resting position of the vehicles on the roadway, skid marks, debris fields, broken glass patterns, traffic-control devices (lights, signs, lane markings), road conditions, weather, the direction of travel of each vehicle, any nearby surveillance cameras (gas stations, ATMs, doorbell cameras, business signage), the other driver's license, registration, and insurance card, and any visible injuries on yourself and passengers. More is better — these images cannot be recreated.

Q: Should I talk to the other driver's insurance company at the scene? A: No. There is no obligation to speak with the adverse driver's carrier on scene or at any time. Exchange the statutorily-required identifying information under Vehicle Code § 16025 and end the substantive conversation. Any later contact attempt by the adverse insurer should be deferred to counsel — the adverse adjuster's purpose is to gather information that reduces your claim, not to assist you. Decline recorded statements, decline blanket medical authorizations, and route substantive discussion through an attorney.

Q: What if the other driver wants to settle without involving insurance? A: Decline. On-scene cash offers almost always indicate the other driver is uninsured, has license issues, or recognizes fault and wants to avoid a record. Many injuries do not manifest for 24–72 hours and the immediate property-damage estimate routinely understates true repair cost (frame damage, suspension damage, and electronics damage often surface only on teardown). Once you accept cash and sign anything, the claim is generally extinguished under Civil Code § 1542. Exchange information, report through proper channels, and let insurance and counsel handle resolution.