What Do I Do if a Police Report is Wrong about My Accident?

When you’re involved in a car accident, the first thing most people want to do is obtain a copy of the police report. This is natural, because handled correctly, a police report can be evidence in your case. But police officers are human, and sometimes the report doesn’t match what actually occurred. Over the years, we’ve heard from countless people about errors in the police report of their crash. Naturally, each of them wanted to know: “What do I do if a police report is wrong about my accident?”

Answer: If a police report is wrong about your accident, gather evidence that supports your version of events and request a correction as soon as possible. Even if the police are unwilling to correct the report, this evidence (if handled correctly) can still be used to make your case at trial.

Let’s examine common causes of police report error, the likelihood police will fix errors in reports, and how independent investigators can overcome issues with erroneous police reports.

How Do Errors End Up in Police Accident Reports?

Ideally, a police officer dispatched to a crash scene would have the time, equipment, and training to do a thorough and accurate job of determining what happened. Unfortunately, things rarely go that well. Many departments don’t have the personnel or budget for a crack team of investigators, and sometimes the officers they send out can’t make heads or tails of what they find. Because of these issues, mistakes in a police report—while frustrating—aren’t unusual. Some of the ones we’ve seen most often include:

• Listing incorrect dates, times, or locations
• Misidentifying drivers, passengers, or vehicles
• Recording the wrong insurance or license information
• Misstating the direction of travel or lane positions
• Misinterpreting vehicle damage or drawing inaccurate diagrams
• Leaving out key witness statements or summarizing them inaccurately
• Attributing fault without enough evidence
• Relying too heavily on one person’s account
• Omitting photos, measurements, or other supporting details

To be clear, nobody is saying police investigators are inept. They’re just usually under some pressure to get things done, and that can lead to mistakes. Here are a few of the reasons they might make errors while investigating:

• Vehicles were already moved when officer arrived
• Conflicting witness accounts
• Scene was busy, noisy, or unsafe
• Misunderstandings due to confusion or language barrier
• Time pressure or competing priorities leads to rushing
• Weather/visibility conditions hide or erase skid marks, debris, or damage patterns

That’s not a complete list, but hopefully they illustrate the kinds of hurdles a traffic officer might face while trying to accurately document an accident. Understanding how these errors happen doesn’t excuse them, but it does explain why challenging an incorrect report is sometimes necessary. The key is knowing that mistakes are possible—and that you have options for addressing them, including getting police to change their report. However, doing that can be challenging.

Will an Officer Ever Change a Police Report Finding?

Police departments generally treat original reports as official records, and they don’t revise them lightly. Officers can change their findings on a report, but it’s pretty uncommon—and it usually takes strong, objective evidence before they’ll budge. That means clear proof like photos, video footage, witness statements, vehicle data, or expert analysis that shows the report is inaccurate. Even then, the officer has to agree that the new information changes the understanding of what happened.

Getting a change made is often difficult because officers aren’t required to alter a report simply because someone disputes it. Most departments allow only factual corrections—things like misspelled names or incorrect vehicle details—without much debate. Corrections to opinions or fault determinations are far more challenging, and many agencies prefer to just tack on supplemental statements rather than replace the original conclusion. That means the original finding usually remains on record, even when your new evidence is documented alongside it.

In short, officers can revise a report, but they rarely do so without compelling evidence, and they aren’t obligated to change their conclusions just because you disagree with them. Let me say that again, because it’s important: It’s up to the officer’s discretion whether or not to make any changes to their original report, so you need to come prepared. That part can trip people up: How can they get facts and details that will convince the police they made a mistake? By enlisting independent professionals to revisit the accident.

Real-Life Example of When an Officer Amended a Police Report

A past Grossman Law Offices case illustrates some of the pitfalls of police investigations, as well what it takes to change their minds (and reports).

Some time ago, we spoke with the family of a motorcyclist who died after a collision with a tractor-trailer. When we got the police report, we saw that the “official” story blamed the rider for speeding and weaving through traffic. According to the crash report, the accident was entirely the motorcyclist’s fault.

A Concerned Family Takes Action

The family knew what the report said but didn’t buy it. They told us their loved one was a careful rider who was active in several motorcycle-safety groups—the exact opposite of the “reckless biker” stereotype the report hinted at. We told them we’d look into it and try to understand why the stories didn’t match.

How Grossman Law Offices Helped

Our first step was getting the crash investigator’s full open-records packet—notes, witness statements, and all the evidence used to build the report. Right away we saw a major problem: investigators hadn’t collected any data from the 18-wheeler. A proper investigation would have checked the truck’s onboard computer to learn its speed and whether the driver braked before impact. None of that was in the file.

The packet also included a witness interview that seemed to shape most of the officer’s conclusions. According to the notes, the witness said the rider passed him 15–20 mph faster while switching back and forth between lanes.

Because that statement carried so much weight, we tracked down the witness and spoke with him ourselves. What he told us didn’t match the officer’s notes. Yes, the motorcyclist passed him at a higher speed, but that was only because the witness was driving about 20 mph under the limit while towing a heavy load. He also made clear that the rider wasn’t “weaving;” he just passed in a normal, safe way. The witness even remembered the rider using his signal and exchanging a friendly wave.

Even with that clarification, we kept digging and found investigators missed other important evidence—the 18-wheeler had a real-time GPS system police never bothered to review. Once we pulled the data, the truth became obvious: the truck driver didn’t stop or yield to oncoming traffic when leaving a motel parking lot. He drove straight into the road and directly into the motorcyclist’s path.

The Officer Does the Right Thing

With all that evidence, we went back to the lead crash investigator. After reviewing it, he admitted he had handed part of the investigation to a rookie because he was called to another scene. The rookie, who didn’t think much of motorcyclists, let his biases get in the way while writing down the witness statement. That skewed version became the “official” story that never made sense to the victim’s family.

To his credit, the lead investigator acknowledged the mistake and updated the crash report to reflect the true sequence of events. The corrected report placed fault squarely on the truck driver who pulled out without warning. If the original report had stood, though, it’s likely that driver would never have faced consequences for causing a fatal crash.

We’re glad we could help set things straight in that case, but it’s far from the only one we’ve run across. Whether accidentally or intentionally, police officers sometimes make costly errors when filing reports. Left unchecked, their mistaken stories become the “gospel truth” of what happened—to the serious detriment of victims and their families. If their investigators don’t always get the job done, though, then who are people supposed to turn to?

Independent Investigators Find What Police Miss

Again, nobody’s saying police can’t conduct a traffic investigation—just that their priorities don’t always align with an accident victim’s. They focus on securing the scene, clearing traffic, and documenting the basics. All that is essential, but it doesn’t allow for the kind of careful analysis needed to uncover the whole story.

Independent investigators, on the other hand, typically have both the time, training, and resources to deep-dive into an accident in a way police often can’t. They’re brought in specifically to understand what happened and why. That might mean closely examining vehicle damage, laser mapping the accident scene, tracking down and interviewing witnesses more thoroughly, or analyzing the electronic data from the vehicles involved. Since it’s their entire job, they don’t have to rush through it and no competing emergencies will pull them away from the task at hand.

Because they’re hired to pursue clarity rather than manage a crisis, independent investigators can approach the situation with fresh eyes and a narrower focus. Their work often reveals details that were missed or misinterpreted at the scene, and they can reconstruct the events with a level of precision that police reports don’t always provide. This deeper dive into the physical evidence and the sequence of events can make a significant difference in understanding the full story behind a crash. With the evidence those experts uncover, accident victims stand a much better chance of disputing a police report.

Where does one find a qualified accident reconstruction? The best way is to call a lawyer.