Car people know their vehicles record data. Most drivers do not know what, for how long, who owns it, or that in New York it just became the single most important evidence in a crash case. I handle car accident cases on Long Island, and in the last four months the first question I ask a new client has changed from “what happened” to “what does the car say happened.”
What the black box records
Since the 2013 model year, federal regulation 49 CFR Part 563 has required every passenger vehicle sold in the United States with an event data recorder to capture a standard set of data when a crash trigger fires. The recorder is usually inside the airbag control module. For roughly five seconds before impact and a fraction of a second after, it stores vehicle speed, throttle position, brake application, steering input, engine RPM, seatbelt status, and airbag deployment timing, sampled several times a second.
Two details matter for what happens next. If the airbags deployed, the module locks the event and it cannot be overwritten. If they did not, the event may be overwritten by later triggers, including the tow truck loading the car or a technician cycling the ignition. And the data belongs to the vehicle’s owner. An insurer or an opposing party cannot pull it without consent or a court order, which means that whoever controls the car controls the evidence.
Why this suddenly matters in New York
Until this spring, New York was a pure comparative negligence state. If a jury found you 60 percent at fault, you still recovered 40 percent of your damages. Fault was a dial.
On May 27, 2026, the state budget added CPLR 1411(b). In a car accident case, a plaintiff whose fault is greater than the defendant’s now recovers nothing for pain and suffering. Fault is a switch. It applies to any lawsuit filed on or after that date, whichever way the crash happened.
The practical effect is that the five seconds of data in the airbag module can now decide whether a case exists. A recorder that shows the other driver at 52 mph in a 30 with no braking is the case. A recorder that shows you accelerating into the intersection is the end of it. Adjusters know this. The recorded statement they ask for on day two is an attempt to get your version on tape before anyone reads the car’s.
Dashcams: the evidence you actually control
The event data recorder tells you about your own car. It says nothing about the other driver’s phone, the light, or the lane change. A dashcam does. A front and rear camera with GPS overlay that writes to a card is the cheapest litigation insurance a New York driver can buy, and I say that as someone who spent years on the defense side watching plaintiffs lose cases they should have won because the only account of the crash was two drivers disagreeing.
Three rules. Save the file the same day, to a second device, before the loop overwrites it. Do not edit it, trim it, or “clean it up”; the original with its metadata is what a court will admit. And do not post it. A clip on social media becomes an exhibit for the other side too, with your commentary attached.
Preservation, and the sanction for losing it
New York courts take spoliation seriously. Under CPLR 3126 a party who destroys evidence, even negligently, can face an adverse inference instruction, meaning the jury is told to assume the missing evidence would have hurt the party who lost it, or dismissal in a bad enough case. For a plaintiff, that means the wrecked car in the tow yard is evidence. Do not let the insurer total it and auction it until the module has been imaged. A written preservation demand should go to the other driver’s insurer within days, asking them to hold their insured’s vehicle, and it should go to any business whose cameras faced the intersection, because most commercial systems overwrite in 30 days or less.
Telematics, phones and the other driver
Beyond the black box, modern cars phone home. Connected-car services, insurer telematics apps, and phone-based usage programs all log speed and location, and all are discoverable in litigation. So are the other driver’s phone records, which are the standard way to prove a driver was texting at the moment of impact. New York’s cell phone and texting statute, Vehicle and Traffic Law 1225-d, makes the violation itself evidence of negligence.
None of this arrives on its own. It has to be demanded, subpoenaed and, when the other side resists, litigated. The window is short and the data does not wait.
The checklist
Photograph the scene and both cars before anything is moved, if you physically can. Get the other driver’s information and the names of witnesses. Decline the recorded statement. Save your dashcam file that day. Tell the tow yard and your insurer in writing that the vehicle is not to be released, sold or scrapped until it has been inspected. File your no-fault application with your own carrier within 30 days and your MV-104 with the DMV within ten. Then get someone to send the preservation letters.
I have written up how these cases are built now, from the first call through the evidence demands, in this Long Island car accident guide. It is written for drivers, not lawyers, and it is the checklist we run on every new file.
The car was always a witness. New York just made it the most important one in the room.
Jason Tenenbaum is the principal of the Law Office of Jason Tenenbaum, P.C. in Huntington Station, New York. He has practiced personal injury and insurance law since 2002 and has written about New York no-fault and appellate decisions since 2008.
Matthew Wilde
Matthew Wilde is an automotive journalist with experience contributing to leading publications. He focuses on delivering clear, well-researched analysis of automotive industry news and vehicles. Growing up surrounded by a variety of cars, Matthew developed a strong foundation in automotive technology and design. His work emphasizes accuracy and depth, aimed at informing both enthusiasts and industry professionals with straightforward, precise reporting.
https://theweeklydriver.com/