After a car accident, every state requires you to stop and give the other driver your name, address, driver’s license number, vehicle details, and insurance company and policy number. Exchanging insurance information after a car accident is mandatory regardless of who caused the crash, how minor the damage looks, or whether it happened on a public road or a private parking lot. Skipping the exchange or driving off can turn a routine fender bender into a criminal hit-and-run charge.
What You Must Hand Over
The wording of the statute varies by state, but the required categories are the same everywhere:
- Your full legal name and current home address.
- Your driver’s license number. Some states also require you to physically show the card if asked.
- Vehicle information: make, model, color, and license plate number. Many states also require the Vehicle Identification Number from your registration.
- Your insurance company’s name and your policy number.
The easiest way to have the insurance details ready is to keep your card in the glove box or pull it up through your insurer’s mobile app. Some states also require you to show your registration certificate and to give the registered owner’s name if it differs from yours.
These requirements apply to every collision involving another person’s vehicle or property. There is no “serious accidents only” threshold. Even a low-speed parking lot scrape obligates both drivers to stop and swap details.
What You Should Not Share
The legal duty has limits, and drivers routinely hand over far more personal data than the law requires. That creates real identity-theft risk in an already stressful moment.
Never give the other driver your Social Security number. No state’s exchange-of-information statute requires it, and it is the single most dangerous piece of data to share with a stranger. The other driver’s insurance company does not need it to process their claim either. If an adjuster later asks for your SSN, you can usually provide just the last four digits or offer your driver’s license number as an alternative identifier.
Be cautious with your phone number and email address as well. A handful of states include “contact information” in their exchange requirements, but in most cases communication after the accident flows through the insurance companies rather than directly between drivers. If you’d rather not share your personal number, the police report can serve as the contact bridge. Your home address is legally required in most states, but anything beyond what’s printed on your license and insurance card is optional.
Document the Scene While You’re There
Exchanging cards is only half the job. The other half is building your own record, because memories fade fast and the other driver’s story may shift once their insurer is involved.
Start with your phone camera. Photograph the damage to every vehicle from multiple angles, including close-ups of dents, scratches, and broken glass. Then step back and capture wider shots showing the position of the cars relative to each other, any traffic signs or signals, skid marks, and the overall weather and lighting. If you have visible injuries like bruises or cuts, photograph those too.
Take a picture of the other driver’s license, insurance card, and license plate instead of writing everything down by hand. Transcription errors are common when you’re shaken up, and a photo eliminates them. If dashcam footage caught the collision, save or lock the file immediately so it doesn’t get overwritten.
Look around for witnesses. Someone at a nearby bus stop or walking out of a store may have seen exactly how the crash unfolded. Ask if they’d share their name and phone number. A neutral third-party account carries real weight when two drivers tell contradictory stories.
If the Other Driver Won’t Cooperate
Some drivers panic, get hostile, or try to leave. If someone refuses to share their information or starts walking back to their car, call 911 or your local non-emergency police line right away. Officers can compel the exchange and document everything in an official report. Many states require a police response anyway when there are injuries, a death, or property damage above a set amount, and the responding officer’s report becomes a key piece of evidence for the insurance companies.
While you wait, capture what you can on your own. Photograph or write down the other vehicle’s license plate, make, model, and color. That plate number gives law enforcement and your insurer a direct line to the registered owner. Avoid confrontation. No insurance claim is worth a physical altercation.
If the other driver leaves the scene entirely, you’re now dealing with a hit-and-run. File a police report as soon as possible. Your uninsured-motorist coverage, if you carry it, is typically what pays out in this situation. The more detail you captured before the driver fled, the stronger your claim.
Parked Cars and Unattended Property
Clipping a parked car or backing into a mailbox triggers the same exchange obligation, with an extra step. You have to make a reasonable effort to find the owner. If the vehicle is parked outside a store, go inside and ask. On a residential street, knock on the nearest door.
When you can’t locate the owner, every state requires you to leave a written note in a visible spot on the damaged vehicle or property. Include your name, address, phone number, insurance company, and a brief description of what happened. Tucking a scrap of paper under a wiper and hoping for the best isn’t enough in many jurisdictions. You may also need to report the incident to local police. Driving away without leaving a note or making an effort to find the owner is treated as a hit-and-run, even though no other driver was present.
If You’re Driving a Rental
A collision in a rental car adds one complication: which insurance to share. You still give the other driver your name and license along with the insurance policy that actually covers the vehicle for that trip. That might be your personal auto policy, a travel insurance policy, coverage through your credit card, or the collision damage waiver you bought at the rental counter. Provide whichever one applies.
After the exchange, contact the rental company as soon as possible. Most rental agreements include an emergency number and require you to complete an accident reporting form. Skipping this step can leave you personally responsible for the full cost of repairs, even if you purchased their optional coverage. Keep a copy of the police report, because both your insurer and the rental company will want it.
Reporting the Accident Afterward
The exchange at the scene doesn’t always end your obligations. Most states require you to file a separate accident report with the DMV or a similar agency when the collision exceeds certain thresholds. The two common triggers are property damage above a set dollar amount and any injury or death.
Property damage thresholds typically run from $500 to $2,500 depending on the state. Any accident involving a physical injury, no matter how minor, almost universally requires a report. Filing deadlines are short, usually somewhere between five and 30 days. Failing to file when required can lead to a suspended license in many states, so check your state’s DMV site for the exact threshold, deadline, and form. A police report and a state DMV report are two different things; even if an officer wrote up a crash report at the scene, you may still need to file separately with the DMV.
Notify your own insurer the same day if you can. Almost every policy requires you to report any accident “promptly” or “as soon as practicable,” and waiting days or weeks gives the company grounds to question the claim or deny coverage for late notification. Have the other driver’s information, your photos, the police report number, and a basic timeline ready when you call. Even if you believe the accident was entirely the other driver’s fault and you plan to file against their insurer, notify your own carrier anyway. They need to know in case the other driver files a claim against you, and your collision or uninsured-motorist coverage may come into play if the other insurer disputes liability.
Watching for Staged Accident Scams
Not every collision is genuine. Staged accidents are a well-documented form of insurance fraud, and they rely on the victim dutifully exchanging insurance details so the scammer can file a bogus claim.
A common scheme: a car pulls in front of you and brakes suddenly for no apparent reason, forcing a rear-end collision. Sometimes a second vehicle cuts off the first car to trigger the stop and then drives away. The car you hit had multiple passengers, and every one of them claims neck or back injuries. Another red flag is a “helpful” bystander who materializes right away and volunteers as a witness, always siding with the other driver. Scammers often target newer or commercial vehicles because they assume better insurance coverage.
If something feels off, call the police and insist on an official report. Photograph every occupant of the other vehicle, the surrounding area, and any bystanders. Write down exactly what happened while the details are fresh. Report your suspicions to your insurance company and, if you believe the crash was staged, to the National Insurance Crime Bureau’s hotline. None of this excuses you from exchanging your information at the scene, but a thorough paper trail makes a fraudulent claim much harder to land.