If you rear-ended someone, stop immediately, check for injuries, exchange information without apologizing or admitting fault, document the scene with photos, and call your insurer as soon as you can. As the trailing driver, you’ll almost certainly be presumed at fault, and your liability coverage is what pays for the other driver’s car and injuries. Your own car is only covered if you carry collision. What you do in the next hour, and the next few days, shapes how expensive and how complicated this becomes.
At the Scene
Pull over. Every state requires it, and driving off can turn a fender-bender into a hit-and-run charge, which can be a misdemeanor or a felony depending on whether anyone was hurt.
Check on the other driver and any passengers. Call 911 if anyone is injured. If the cars are drivable and blocking traffic, move them to the shoulder or a nearby lot — many jurisdictions actually require this to prevent a second collision.
Then exchange information: name, address, driver’s license number, vehicle registration, and insurance details. Both drivers are generally required to share this regardless of how minor the damage looks. While you’re doing that, photograph everything: both cars from multiple angles, the position of the vehicles, skid marks, traffic signals, road conditions, and the wider scene. Adjusters pick these details apart weeks later when nobody remembers them clearly.
Don’t Apologize
This is where people cost themselves money. Do not say “I’m sorry,” “I didn’t see you,” or “that was my fault.” Those feel like normal human reactions, but insurers and attorneys can treat them as admissions of responsibility, and even a reflexive apology can shift the liability analysis against you. Stick to exchanging information, asking whether anyone is hurt, and cooperating with police. The full account of what happened is for your insurance company later.
Calling the Police and Filing a Report
If anyone is injured or killed, call law enforcement. For property-damage-only crashes, most states set a dollar threshold that triggers a mandatory report — some as low as $500, others $1,000 or more. When you’re unsure, call anyway. A police report makes the insurance process dramatically smoother, and skipping a required report can bring fines or license problems. Get the report number before the officer leaves.
Some states also require a separate written report to the DMV, usually within 10 days when injuries, a fatality, or damage above the threshold are involved. Missing that deadline can lead to license suspension. It’s separate from the police report and easy to forget.
See a Doctor Within a Day or Two
Even if you feel fine, get checked. Rear-end collisions are known for whiplash and other soft-tissue injuries where symptoms may not appear until days after impact.1Mayo Clinic. Whiplash – Symptoms and Causes You can walk away from the scene feeling normal and wake up three days later unable to turn your head.
A prompt visit also creates a documented link between the crash and any injury. Insurers lean hard on timing. If you wait two weeks, an adjuster will argue the injury happened elsewhere. That matters for you and for any passengers in your car whose injuries may be covered under your policy.
Filing the Insurance Claim
Call your insurer as soon as you reasonably can. Most expect notification within a day or two, and waiting complicates things. Give them the date, time, location, what happened, the other driver’s information, and the police report number. An adjuster will be assigned to assess damage and coverage.
What Your Coverage Actually Pays
As the at-fault driver, your liability insurance pays for the other person’s vehicle repairs and medical bills. Every state except New Hampshire requires liability coverage, with minimums that typically run from $25,000 to $50,000 per person for bodily injury and $50,000 to $100,000 per accident.
Your own car is a separate question. Liability does not cover it. For that you need collision coverage, which is optional in most states. If you have it, your insurer pays for your repairs minus your deductible — a $500 deductible on a $3,000 repair means you pay $500 and your insurer pays $2,500. If you don’t carry collision, the repair to your own vehicle comes out of your pocket.
Roughly a dozen states use no-fault insurance, where each driver’s personal injury protection covers their own medical bills and lost wages regardless of who caused the crash. Lawsuits over injuries are generally restricted unless the injuries meet a state severity threshold. PIP handles the medical side first, and fault matters mostly for property damage and serious-injury claims beyond PIP limits.
Why You’re Presumed at Fault
In the vast majority of rear-end collisions, the trailing driver is presumed at fault. The logic is simple: traffic laws require you to keep enough following distance to stop safely if the car ahead brakes suddenly. If you couldn’t stop, the presumption is that you were following too closely. It isn’t absolute, but overcoming it takes real evidence.
The presumption can shift if the lead driver did something negligent — brake-checking to intimidate a tailgater, driving with broken brake lights, cutting into your lane and immediately braking, or suddenly reversing. If you think any of that happened, the police report and any dashcam footage are what will make the argument. Without evidence, the default sticks.
How shared fault plays out depends on your state’s negligence rules. Over 30 states use modified comparative negligence, about a dozen use pure comparative negligence, and only a handful still follow contributory negligence.2Justia. Comparative and Contributory Negligence Laws 50-State Survey In practical terms for you, proving the lead driver bore some share of blame reduces what their side can collect. In a contributory negligence state, even a small share of fault on their part can bar their claim entirely.
The Costs You Aren’t Thinking About Yet
Repair bills are the visible cost. There are others.
An at-fault accident typically stays on your insurance record for three to five years, and premiums usually climb. Industry data points to increases of 20% to 50% or more, depending on severity, your insurer, your driving history, and your state. If your policy includes accident forgiveness, your first at-fault claim may not raise your rate at all. Check your declarations page or call your agent to find out whether you have it.
There’s also diminished value. Even after the other driver’s car is fully repaired, its resale value drops because it now has an accident on its history. In most states, that driver can file a diminished value claim against your liability insurance to recover the loss. On a newer vehicle, that can run into the thousands on top of repair costs.
And there’s the policy-limit problem. If the other driver’s damages and injuries exceed your liability limits, you can be personally responsible for the difference. This is where minimum-limits policies bite hardest: a serious injury claim can blow through $25,000 in bodily injury coverage quickly.
Lawsuits and Criminal Exposure
The other driver can sue you for amounts beyond what insurance pays — medical expenses, lost wages, pain and suffering. The statute of limitations for personal injury claims from a car accident ranges from one to six years depending on the state, with two to three years being most common. Months of silence doesn’t mean you’re clear.
In extreme cases — rear-ending someone while drunk, or while texting at high speed — the other driver may seek punitive damages, which go beyond actual losses and are meant to punish reckless conduct. Ordinary negligence doesn’t get there, but conduct that crosses into recklessness does.
Criminal charges are unlikely in a routine low-speed rear-ending with no serious injuries. They become a real possibility if impaired driving, excessive speed, reckless behavior, serious injuries, or a fatality are involved. Charges range from misdemeanor reckless driving to felony vehicular manslaughter, with fines, license revocation, community service, or prison on the table. Leaving the scene compounds all of it. A criminal case can also trigger SR-22 requirements, where your state orders your insurer to file proof of coverage — a filing that itself flags you as high risk and raises your premiums for years.
When to Bring in a Lawyer
A minor fender-bender with no injuries is something you can usually handle yourself through the insurance claim. Certain situations change that:
- The other driver claims injuries. Even modest injury claims can escalate into five- or six-figure demands once medical bills and pain-and-suffering multipliers enter the picture.
- You’ve been served with a lawsuit. Your liability insurer will generally provide a defense attorney for civil claims up to your policy limits. If the claimed damages exceed your coverage, hiring your own counsel to protect your personal assets is worth serious thought.
- You’re facing criminal charges. DUI, reckless driving, or vehicular manslaughter charges call for a criminal defense attorney, not your insurer’s civil counsel.
- Fault is genuinely in dispute. If you believe the lead driver contributed to the crash, an attorney can pull dashcam or surveillance footage and build the case to reduce your share.
Personal injury attorneys typically work on contingency, taking roughly a third of any recovery, sometimes climbing toward 40% if the case goes to trial. If you’re the at-fault driver being sued, your insurer’s duty to defend usually covers the civil side. The exposure where you’d pay counsel out of pocket is a criminal case or a civil claim that exceeds your policy limits.
Keep every document from the accident together: the police report, photos, insurance correspondence, medical records, repair estimates, and any messages from the other driver’s insurer. If a suit surfaces a year or two later, you’ll want it all in one place rather than reconstructed from memory.