If you’ve just been rear-ended, what to do next comes down to a short list: get to safety and call the police, photograph everything before you leave the scene, see a doctor within 24 hours even if you feel fine, notify your insurance company promptly, and don’t sign anything from the other driver’s insurer until you know the full extent of your injuries. The driver who hit you is almost always presumed at fault, which puts you in a strong position, but only if the next few hours and days are handled well. Insurers build their offers around gaps and inconsistencies, and most of those gaps are created in the first week.
Make the Scene Safe Before Anything Else
Check yourself and your passengers for injuries first. Adrenaline hides pain well enough that people walk around accident scenes with fractured vertebrae, so “nothing hurts” isn’t the same as “nothing’s wrong.” If anyone might be hurt, call 911.
If the cars are drivable and no one is seriously injured, move them out of the travel lanes. Most states require you to clear the roadway after a minor collision when you can do so safely, and a stopped car in a live lane invites a second crash. Pull to the shoulder, into a parking lot, or wherever is closest and safe. If you can grab a quick photo of the vehicles’ positions first without standing in traffic, do it.
Call the police even if the damage looks minor. A police report is the single most important piece of paper in your claim because insurers treat it as more reliable than either driver’s recollection. Many states legally require a report when anyone is injured or property damage crosses a threshold that runs from about $500 to $3,000 depending on where the crash happened. Below those thresholds, a report still protects you if the other driver later changes their story.
Collect Evidence Before You Leave
Ten minutes of documentation at the scene saves weeks of back-and-forth later. Get the other driver’s full name, phone number, driver’s license number, insurance company, and policy number. Photograph the license and the insurance card rather than copying by hand. Note the make, model, color, and plate of their vehicle.
Then photograph everything. The rear damage to your car and the front damage to theirs. The overall position of both vehicles. License plates, skid marks, debris, traffic signals, weather and lighting if either played a role. Adjusters work from photos, and a clear image of paint transfer at the point of impact carries more weight than any written description.
If anyone saw the crash, ask for their name and phone number. A witness who noticed the other driver on their phone or coming in too fast can change the outcome of a disputed claim. Before you leave, get the responding officer’s name, badge number, and the report number so you can request a copy.
Save Your Dashcam Footage Immediately
If you have a dashcam, lock the file right away. Most cameras record on a loop and will overwrite the accident footage within hours. A rear-facing camera captures the impact itself, but even a forward-facing one establishes your speed, your lane position, and whether you braked normally. If the other driver tries to argue you stopped short or swerved into their path, that footage ends the argument.
See a Doctor Within 24 Hours
This is where people hurt their own claims most often. You feel fine at the scene, so you skip the doctor. Two days later you can barely turn your head. Whiplash and other soft tissue injuries routinely take 12 to 72 hours to surface because adrenaline and swelling mask the initial damage. By the time symptoms appear, the insurer has already noted the gap in your medical record and will use it to argue your injuries came from something other than the crash.
Get evaluated within 24 hours even if your only complaint is mild stiffness. An urgent care or emergency room visit creates a medical baseline that ties your condition to the accident, and the resulting record becomes the spine of any injury claim.
Symptoms That Show Up Later
Rear-end collisions put unusual force on the neck and spine. In the days after the crash, watch for:
- Neck pain and stiffness, often worse on the second or third day
- Sudden or severe headaches
- Pain between the shoulder blades or in the lower back
- Dizziness or trouble concentrating
- Numbness or tingling in the arms or hands
- Sleep disruption or persistent fatigue
If any of these appear, get them documented by a medical professional immediately. Keep a daily log of pain levels, what you can’t do, and what medications you’re taking. Save every bill, pharmacy receipt, discharge summary, imaging report, and treatment plan. The thicker your medical paper trail, the harder it is for an adjuster to minimize what happened to you.
Who the Law Says Is at Fault
Every driver has a legal duty to maintain a safe following distance and stay alert enough to stop if the car ahead brakes. When a rear-end collision happens, the law presumes the trailing driver failed one or both of those duties. That presumption is built from decades of court decisions rather than a single statute, and it gives you a strong starting position.
The rear driver can try to overcome the presumption, but the burden is on them. Most states use comparative negligence, where fault can be split between drivers based on each person’s share of responsibility. Only four states and Washington, D.C. still follow contributory negligence, where any fault on your part can bar recovery entirely.1Legal Information Institute. Comparative Negligence Knowing how fault gets analyzed helps you avoid saying or doing something that undercuts your own claim.
When the Presumption Can Shift
The rear driver isn’t automatically on the hook in every situation. Fault can shift partly or entirely to the lead driver when:
- The lead driver brake-checked the car behind them for no reason
- The lead driver’s brake lights weren’t working, removing the visual warning that they were stopping
- The lead driver cut into the lane without leaving adequate space
- The lead driver was actually reversing into the car behind them
- In a chain-reaction pileup, the rearmost driver who started the chain is usually responsible, not the drivers in the middle who got pushed forward
If you were driving normally when someone hit you from behind, none of this changes the result. But the other driver’s insurer will look for anything they can use, which is why the evidence you collected at the scene matters.
Notify Both Insurance Companies — Carefully
Your own policy almost certainly requires you to report accidents promptly, with most insurers expecting notification within one to three days. Miss that window and your insurer can limit or deny coverage on your end. Call them, give the basic facts (date, time, location, other driver’s information), and stop. Don’t speculate about fault, don’t minimize your injuries, and don’t guess at a damage estimate. Everything you say goes in the claim file.
You’ll also want to notify the other driver’s insurer that you intend to file a claim against their policyholder. Keep that call factual and brief too. The other driver’s adjuster is not on your side, and their job is to pay you as little as possible. You are not obligated to give them a recorded statement, and in most cases you shouldn’t, at least not until you understand the full extent of your injuries and losses.
Getting a Rental Car While Yours Is Repaired
There are two paths to a paid rental. If you carry rental reimbursement coverage on your own policy, you can file through your insurer quickly without waiting for the other side to accept fault. Daily limits usually run $30 to $50 with a total cap around $900 or 30 days. If the other driver is clearly at fault, their liability insurance should cover your rental, but that route takes longer because their insurer has to finish its investigation first.
Watch for one trap: if parts delays or a repair backlog stretch out the timeline, your own rental coverage still stops at the policy limit. You may be able to recover the extra days from the at-fault driver’s insurer, but you’ll have to document the delay and push for it specifically.
Don’t Sign a Release Until You’ve Healed
At some point the insurer will offer a settlement and ask you to sign a release of all claims. This is where the most money gets left on the table. A release is a binding contract that permanently ends your right to seek any further compensation from the at-fault driver for this accident. It covers injuries you know about and injuries you haven’t discovered yet. Once you sign, you cannot reopen the claim because your injuries turned out to be worse than expected or your bills kept climbing.
The only ways to undo a signed release are extreme: proving fraud by the insurer, proving you lacked mental capacity when you signed, or proving duress. “I didn’t read it carefully” and “my injuries got worse” don’t qualify. Never sign while you’re still in active treatment. Wait until your doctor says you’ve reached maximum medical improvement, meaning your condition has stabilized and further care won’t meaningfully change the outcome. Only then do you know the real cost of what happened to you.
If the Other Driver Has No Insurance or Drives Off
Getting rear-ended by an uninsured driver or a hit-and-run driver is more common than people expect. More than 20 states require uninsured motorist coverage on every auto policy, and many drivers in optional states carry it anyway. Check your own policy for uninsured motorist bodily injury (UMBI) and uninsured motorist property damage (UMPD) coverage. These step in when the at-fault driver can’t or won’t pay.
For a hit-and-run, uninsured motorist coverage treats the unknown driver the same as an uninsured one. You file with your own insurer and your deductible applies. Report the hit-and-run to police immediately, because most policies require a police report before they’ll process the claim. Filing through your own policy may affect your premiums at renewal even though you weren’t at fault, so if the damage is small, ask your agent how your insurer handles it before you file.
Know the Deadline for Filing a Lawsuit
Every state imposes a deadline for suing after a car accident, and missing it kills the claim. Personal injury deadlines range from one year to six years depending on the state, with two or three years being the most common. Property damage claims have their own separate deadline, typically two to three years but as long as ten years in a few states.
The clock usually starts on the date of the accident. In limited situations involving injuries that weren’t immediately apparent, a discovery rule can delay the start of the deadline until you knew or should have known about the injury, but courts apply this narrowly and expect you to act reasonably. The safest approach is to treat the accident date as your start point and act well before the deadline.
The statute of limitations applies to lawsuits, not insurance claims. But the two are linked, because your leverage in settlement talks comes from the insurer knowing you can still sue. Once the deadline passes, that leverage disappears.
When to Call a Lawyer
Not every rear-end collision needs an attorney. If the damage was minor, nobody was hurt, and the other driver’s insurance is cooperating, you can usually handle the claim yourself and keep the full recovery. The situation changes if you have significant medical bills, the insurer is disputing fault, you’re being pushed to accept a low offer, the other driver was uninsured, or your injuries are ongoing and you don’t yet know the total cost of treatment.
Most personal injury attorneys work on contingency, taking a percentage of your recovery (typically around a third) and charging nothing upfront. The consultation is usually free, and the attorney only gets paid if you do. The real question isn’t whether you can afford a lawyer. It’s whether the amount at stake justifies giving up a share of it for professional help with a process designed to pay you as little as possible.