Handling Insurance Disputes When the Police Report Is Wrong

Key Takeaways for Challenging an Inaccurate Police Report

1. A police report is an opinion, not a final verdict. It is considered hearsay in California courts and cannot be the sole determinant of fault in your insurance claim.
2. You can formally challenge errors in a police report. Factual mistakes can be corrected, and for disputed conclusions, you can file a supplemental report to add your side of the story to the official record.
3. Independent evidence is the most effective way to overcome a bad report. Evidence like EDR (black box) data, surveillance video, and physical analysis can override an officer’s incorrect opinion and force the insurance company to re-evaluate liability.

The Real Impact of a Police Report on Your Insurance Claim

To understand why a bad police report hurts you, you must understand how an insurance company operates. When you file a claim, it goes to an adjuster. This adjuster handles dozens, sometimes hundreds, of files simultaneously. They need a quick way to assess risk and set reserves.

Reserves are the funds the insurance company sets aside to pay your claim eventually. The Traffic Collision Report is usually the first document the adjuster reads to determine that number. If the report identifies you as the party at fault, the adjuster sets the reserves low or to zero, anticipating they will deny the claim.

In California, liability is determined by a legal standard called Pure Comparative Negligence. This means fault is not an all-or-nothing proposition: you can be 1% at fault, 50% at fault, or 99% at fault. If a jury finds you 20% responsible for the crash, you lose 20% of your compensation.

A police report that incorrectly blames you, or even one that suggests you were partially to blame (e.g., by driving 5 mph over the limit), gives the insurance company leverage. They will use that document to argue for a higher percentage of fault on your end, thereby reducing the check they write you.

However, it is a legal reality that the police report is generally inadmissible in court. Under California evidence laws, the report is considered hearsay. The officer cannot testify to the truth of how the accident happened because they did not see it. They can only testify to what they did at the scene (like measuring skid marks). Therefore, while the report feels heavy and authoritative during the insurance negotiation, it carries far less weight if your case proceeds to litigation.

Identifying the Type of Error: Factual vs. Disputed

Not all errors on a police report are created equal. To fix a report, we first categorize the mistake. We generally look at two types of errors: objective factual errors and subjective disputed liability errors. 

Factual Errors

These are mistakes regarding objective data points. They are essentially clerical typos or misunderstandings of static facts. Examples include:

• Vehicle Information: The officer wrote down the wrong license plate, VIN, or insurance policy number.
• Identity Details: Names are misspelled, dates of birth are inverted, or driver’s license numbers are transcribed incorrectly.
• Time and Location: The report lists the crash as happening on Tuesday when it was Wednesday, or on the wrong cross-street.
• Passengers: The report fails to list a passenger who was in the car.

These errors rarely shift liability. Correcting the color of your car from blue to black won’t convince an adjuster you had the green light. However, these corrections are necessary for administrative purposes so claims can process smoothly. Police departments are usually willing to fix these quickly because they are indisputable.

Disputed Liability Errors

These are the hard fixes. These errors stem from the officer’s judgment call or opinion on how the crash occurred. Examples include:

• Primary Collision Factor: The officer checked the box claiming you violated a specific vehicle code, such as making an unsafe lane change.
• Estimations: The report says you were speeding based on the severity of the impact, even though the officer used no radar.
• Omissions: The officer failed to interview a witness who saw the other driver run a red light.
• Misunderstanding Law: The officer misinterpreted who had the right-of-way at a complicated intersection.

These are much harder to change because you are asking an officer to admit their professional opinion was wrong. They made that decision based on what they saw and heard at the scene. To change their mind, we must provide new, tangible evidence that was not available to them at the time.

Steps to Request an Amendment to the Traffic Collision Report

You have the right to ensure the official record reflects your version of events. Even if the police department refuses to change the officer’s conclusion, having your account on record helps balance the file.

Timing and Agency

While there is no strict statutory deadline that instantly bars you from asking for a correction, sooner is always better. You want the correction on file before the insurance investigation concludes. 

You must also identify the correct agency. The California Highway Patrol (CHP) handles freeways and unincorporated areas, while local departments (like LAPD or San Diego PD) handle city streets.

Writing the Request

Do not call the station to argue with the desk sergeant—this is rarely effective and usually leads to frustration. Instead, the request should be made in writing. This creates a paper trail.

Under California Vehicle Code § 20008, if you were involved in an accident resulting in injury, you are entitled to file a written supplemental report. This ensures your statement is included in the official file, even if the officer initially forgot to ask you for it.

The Goal: Supplement, Don’t Delete

Manage your expectations. It is extremely rare for a police department to delete an original report or completely erase an officer’s conclusion. Police departments are protective of their officers’ discretion.

Consequently, our goal is usually to get a Supplemental Report attached to the original. Think of this as an addendum or an appendix. The original report remains, but the new document is stapled to the back, explicitly stating, “Driver 1 states X,” or “Witness A provides new video footage.”

This forces the insurance adjuster to acknowledge that the original report is contested. It removes the finality of the initial document and reopens the conversation about liability.