What to Do After a Rear-End Collision in California

The Rear Driver Is Almost Always at Fault

California Vehicle Code section 21703 says drivers cannot follow more closely than is reasonable and prudent. Translation: if you ran into the back of someone, the law starts out assuming you were either tailgating or distracted. That presumption is powerful. It is the reason rear-end claims are usually faster and cleaner than other car accidents.

There are exceptions. If the lead driver suddenly cut into your lane and slammed the brakes, or backed up unexpectedly, the rear driver may share fault or escape it entirely. Those are fact-specific defenses. Outside of those edges, the rear driver and their insurance carrier own the hit.

The First Hour: At the Scene

Adrenaline will be high. Slow down. Do these things in order, and document as you go.

Move to safety, but do not move the cars unless you have to. If anyone is hurt, call 911 immediately. If the cars are blocking traffic and drivable, pull to the shoulder. Otherwise leave them where they are until officers arrive.

Call the police, even for a "minor" hit. A police report locks in the other driver's identity, insurance, and a neutral version of the facts. Insurance adjusters take police reports seriously. Without one, the at-fault driver can change the story later.

Photograph everything. Take wide shots of both cars, the road, skid marks, debris, traffic signals, and the surrounding scene. Take close-ups of the damage to your bumper, trunk, and any internal damage you can see. Photograph the other driver's license plate, insurance card, and driver's license. Photograph any visible injuries.

Get the other driver's information. Name, phone, address, license number, license plate, insurance carrier, policy number. If they refuse, the police report will capture it.

Get witness contact info. A name and phone number is enough. Witnesses move on with their day, and adjusters know it. Lock them in early.

Do not say you are fine. Even if you feel okay, say "I am not sure yet, I need to be checked out." Whiplash and soft-tissue injuries hide behind adrenaline for a day or more.

Do not apologize. An "I'm so sorry" gets twisted later. Be polite. Be brief. Stick to facts.

The First 72 Hours: Medical Care Is the Case

Your medical record is the spine of your injury claim. Every gap, every "I waited a few weeks" gives the adjuster ammo to argue you were not really hurt.

• Go to the ER, urgent care, or your primary doctor today. Tell them you were rear-ended. Describe every symptom, even mild ones. Headache, neck stiffness, lower back, shoulder, jaw, ringing in the ears, dizziness, anxiety. All of it goes in the chart.
• Follow up within a week. If pain shows up later, go in again. Do not tough it out at home for a month and then expect the insurance company to believe it was the crash.
• Ask about a referral for imaging or physical therapy. Soft-tissue cases are won and lost on whether you actually treated.
• Keep every bill, receipt, and discharge paper. Even copays and gas to and from appointments matter.

Common Rear-End Injuries

The energy of a rear impact whips the head and neck forward and back, then sometimes side to side. Common injuries include:

• Whiplash, cervical strain, and sprain of the neck
• Herniated and bulging discs in the cervical and lumbar spine
• Concussion and post-concussion syndrome
• TMJ injury from the jaw clenching at impact
• Shoulder strains and rotator cuff injuries from gripping the wheel
• Knee injuries from bracing against the floorboard
• PTSD, driving anxiety, and sleep disruption

The Insurance Call: What Adjusters Want You to Do

Within a day or two of the crash, the at-fault driver's insurance company will call. Sometimes within hours. They will sound friendly. They are not on your side. Their job is to close your file for as little as possible, as fast as possible.

Here is the typical script and how to handle each move:

"Can we record this call?" Politely decline. You are not legally required to give the other driver's carrier a recorded statement. Tell them you will respond in writing if needed.

"Can you sign this medical release?" Do not sign a broad release. They will mine your entire medical history for any pre-existing back, neck, or shoulder issue and use it to argue your pain came from somewhere else.

"We can settle this today for X." Early offers are designed to close the file before you know if you need physical therapy, imaging, or surgery. Once you sign, the case is over. There is no reopening it.

"Were you wearing your seatbelt? Were you on your phone? Were you in a hurry?" These are not friendly questions. Stick to short factual answers or refer them to your attorney.

You can simply say: "I am still receiving medical care. I will be in touch when I have more information, or my attorney will." End the call. That is it.

What Your Case May Be Worth

There is no calculator that spits out a number. Rear-end case value depends on:

• The severity of your injuries and whether they are objective (imaging, surgery) or soft tissue
• The total of medical bills, past and future
• Lost wages and reduced earning capacity
• Pain, suffering, and how the injuries affect daily life
• Available insurance limits on both sides
• Whether liability is clean or contested

Damages you can recover under California law include medical expenses, lost wages, loss of future earning capacity, physical pain and suffering, emotional distress, loss of enjoyment of life, and property damage to your vehicle. In rare cases involving truly reckless conduct, like a drunk driver or street racer, punitive damages may apply.

Be careful with online "calculators" that multiply medical bills by some number. Real case value comes from comparable verdicts, the credibility of your treatment, and the willingness to take the case to trial if needed.

If the Other Driver Is Uninsured or Underinsured

Roughly one in six California drivers is uninsured at any given moment. If you got hit by one of them, your own auto policy may save you. Look for two coverages on your declaration page:

• Uninsured Motorist (UM) Bodily Injury covers your injuries when the at-fault driver had no insurance
• Underinsured Motorist (UIM) Bodily Injury covers the gap when the at-fault driver's policy is too small to cover your damages

UM and UIM claims are made against your own carrier, but they do not raise your rates the way an at-fault claim would, and they do not affect your good-driver discount. They are exactly the coverage you paid premiums for.

The Statute of Limitations

You generally have two years from the date of the crash to file a personal injury lawsuit in California (CCP section 335.1). Property damage claims have three years. If a government vehicle was involved, like a city bus or police car, you have only six months to file a government claim notice.

These deadlines sound far away. They are not. Settling without filing burns time. Insurance carriers stretch out negotiations specifically to push cases toward the deadline. Get an attorney involved early so the calendar does not become a weapon against you.

When to Call an Attorney

Call right away if any of these are true:

• You went to the ER or urgent care
• You will need physical therapy, imaging, injections, or surgery
• You missed work or expect to miss work
• The other driver's insurance is offering a quick settlement
• The at-fault driver was uninsured or underinsured
• A government, commercial, or rideshare vehicle was involved
• You feel pressured by an adjuster

The consultation is free. Our fee is contingent. You pay nothing up front and nothing unless we recover for you.

What We Do for You

We notify both insurance carriers and put a stop to the harassing calls. We collect your medical records, bills, and lost-wage documentation. We preserve evidence by sending preservation letters to dashcam vendors, traffic-cam operators, and rideshare or commercial fleet owners when relevant. We retain accident reconstructionists and medical experts when needed. We value your case using comparable verdicts and the full picture of your damages, not adjuster math. We negotiate, and if the offer is not fair, we file suit and try the case.

You heal. We handle the rest.