After a car accident, proving fault is critical if you want to recover compensation for your injuries, medical bills, and lost wages. In California, strong evidence can make the difference between a denied claim and a successful settlement. Here are the 10 most important types of evidence that can help win a car accident case.

1. Police Reports

A police report provides an official record of the accident, including statements from drivers and witnesses, traffic citations, and officer observations.
Source: https://www.chp.ca.gov/

2. Photographs of the Scene

Pictures of the vehicles, skid marks, road conditions, and traffic signals are powerful pieces of evidence that show how the accident happened.

3. Video Footage

Surveillance cameras, dash cams, or traffic cameras may capture the crash itself. Video evidence is often the most persuasive in proving liability.
Source: https://dot.ca.gov/

4. Medical Records

Hospital reports, diagnostic imaging, and treatment records link your injuries directly to the accident, making them essential for proving damages.
Source: https://www.mayoclinic.org/

5. Witness Statements

Eyewitnesses can provide neutral accounts of the accident, helping confirm details such as speeding, red-light running, or reckless driving.

6. Expert Testimony

Accident reconstruction experts, medical specialists, or economic experts can help demonstrate how the crash occurred and the long-term impact on your life.

7. Cell Phone Records

If distracted driving is suspected, cell phone logs may show texting, calls, or app use at the time of the crash.
Source: https://www.nhtsa.gov/risky-driving/distracted-driving

8. Vehicle Damage Reports

Mechanic inspections and insurance adjuster reports can reveal how the vehicles were impacted, supporting claims of speed or collision angles.

9. Black Box Data

Many modern vehicles contain electronic data recorders (EDRs), which log speed, braking, and steering inputs right before a crash.
Source: https://www.nhtsa.gov/electronic-data-recorders

10. Driver Statements & Admissions

Sometimes drivers admit fault at the scene or to insurance companies. These statements can be used to strengthen your case.

Why Evidence Matters in California Car Accident Claims

California follows a comparative negligence rule, meaning the compensation you receive can be reduced if you are found partially at fault. Strong evidence helps ensure the other driver not you, is held responsible.

At Hillstone Law, we know how to gather and present evidence to build a winning case. From accident reconstruction to negotiating with insurers, our team works to maximize your recovery.

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If you’ve been in a car accident, don’t wait, evidence can disappear quickly. Call Hillstone Law today for a free consultation.