Your car just got hit from behind. Maybe you saw it coming in the rearview mirror and braced for it. Maybe it came out of nowhere and now your neck hurts and your hands are shaking and you are sitting in a car that may or may not be safe to drive, trying to figure out what just happened and what you are supposed to do next. Whatever the specifics, the next few hours matter more than most people realize, and the mistakes people make in those hours are often the same ones that cost them later.
The first thing worth understanding is that your body is lying to you right now. Adrenaline is a remarkably effective painkiller, and it is coursing through your system whether you feel panicked or surprisingly calm. People walk away from rear-end collisions saying they feel fine, decline medical attention at the scene, drive home, and wake up the next morning unable to turn their head. This is so common that it has a clinical name, and it is one of the primary reasons personal injury claims become complicated. If you feel okay right now, that is genuinely good news, but it does not tell you much about how you will feel in 24 or 72 hours. That distinction matters enormously for your health and for any legal claim you might have.
At the scene, if you can safely move, get out of traffic. Turn on your hazard lights, pull to the shoulder or a nearby parking lot if the vehicles are drivable, and call 911. In Missouri and most other states, you are required to report any accident involving injury or significant property damage. Even if the other driver tells you it is not necessary, even if they seem nice and cooperative and say they will handle everything, call the police anyway. A police report is a contemporaneous official record of what happened, who was involved, and what conditions existed at the scene. Insurance companies and courts treat it accordingly. Without one, the accident becomes a matter of competing memories, and that rarely works in the favor of the person who was hit.
When the officer arrives, tell them factually what happened. Do not speculate about fault, do not apologize reflexively, and do not say you feel fine if you are not certain. Officers write down what people tell them at the scene. If you tell the responding officer that you feel okay and you later develop a herniated disc, that statement becomes something an insurance adjuster will point to.
Exchange information with the other driver: full name, driver’s license number, license plate, insurance company, and policy number. Take photographs of everything you can think of before any vehicles are moved, including both cars from multiple angles, the point of impact, any debris in the roadway, skid marks or lack thereof, traffic signs, the intersection or road layout, and the other driver’s documents. Take a photograph of the other driver if they will allow it. Note the time, weather, and lighting conditions. All of this sounds like a lot when you are shaken up, but your phone camera makes it fast and the documentation will matter.
Here is something most people do not know, and it changes how you should think about the next few days. Insurance companies that handle rear-end collision claims routinely deploy what is called a low-impact defense. Their position is that if the damage to your vehicle is minor, your injuries cannot be serious. They hire biomechanical engineers and medical consultants who will testify, with professional credentials and elaborate diagrams, that the forces involved in a low-speed rear-end collision are insufficient to cause the injuries you are claiming. This defense has been used successfully in courts across the country, and it is aggressively deployed even when the person sitting in the struck vehicle has legitimate, documented injuries. The reason it works is that soft tissue injuries, which are the most common result of rear-end collisions, do not show up on x-rays, do not always appear on initial MRIs, and can be dismissed as exaggerated or fabricated. The insurance company is not going to tell you this is their plan. They are going to call you quickly, sometimes within hours of the accident, be very pleasant, and start gathering information that will help them execute this strategy.
Which brings up the recorded statement. An adjuster from the at-fault driver’s insurance company will likely contact you and ask if you would be willing to give a recorded statement about what happened. You are not legally required to give one to the other driver’s insurance company. Many people assume they are, or that refusing looks suspicious, but neither is true. You have no contractual obligation to that insurer. The recorded statement exists to document things that can be used to minimize your claim, and it will happen before you have a full picture of your injuries or your medical expenses. This is not the moment to tell your story to someone whose job is to pay you as little as possible.
Your own insurance company is a different situation. Most policies require you to cooperate with your own insurer, so if your adjuster calls, you generally do need to respond. Read your policy or speak with an attorney before giving anyone a recorded account of what happened, particularly if you have been injured.
Go to the doctor. Go today, or at the absolute latest tomorrow morning. Not because you necessarily feel terrible, but because the medical record you create in the immediate aftermath of a collision becomes the foundation of everything that follows. If you wait three days to see a doctor, an insurance adjuster will note the gap and argue that your injuries could not have been that serious. If you wait a week, that argument becomes significantly stronger. If you wait two weeks, you have created a genuine problem for yourself. Emergency rooms, urgent care clinics, and your primary care physician all establish a record. Tell the provider exactly what happened, where you feel pain, and every symptom you have noticed, including headache, dizziness, difficulty concentrating, blurred vision, and any tingling or numbness. These are all recognized symptoms of whiplash and traumatic brain injuries that can follow rear-end collisions and may not present dramatically at first.
Follow through on every treatment your doctor recommends. Gaps in treatment are the second major tool insurance companies use to reduce or deny claims. If you are told to follow up with a specialist and you do not go, or you are prescribed physical therapy and you attend three sessions before stopping, those gaps will be used to suggest your injuries resolved or that you were not as hurt as you claimed. The medical record tells a story, and the story needs to be consistent with your account of what you experienced.
Keep a journal starting the day of the accident. Write down your symptoms each day, the activities you cannot do, the sleep you are losing, the pain you feel in the morning, the things you missed at work or with your family. This personal documentation is admissible evidence. Juries and adjusters are human beings who respond to specific, concrete accounts of how an injury affected someone’s life. A journal that says you could not pick up your child for six weeks says something different than a medical record that says “patient reports pain.” Both matter. The journal fills in the human reality that clinical documentation cannot.
On the question of fault, Missouri follows a pure comparative fault rule, which means that even if you are found partially responsible for a collision, you can still recover damages, reduced by your percentage of fault. In a rear-end collision, there is a strong legal presumption that the driver who struck you from behind was at fault. That presumption is rebuttable, meaning the other side can try to argue you stopped suddenly, cut them off, or had nonfunctioning brake lights. This does not mean the presumption is easy to overcome, but it is another reason documentation at the scene matters. The more clearly you establish what happened, the harder it becomes to shift responsibility onto you.
If your injuries are anything more than minor, speaking with a personal injury attorney before you accept any settlement offer is worth your time. Most personal injury attorneys in Missouri offer free consultations and work on a contingency basis, meaning they only collect a fee if you recover money. An attorney can assess whether the settlement being offered reflects your actual damages, including future medical treatment you may not have thought to account for. Insurance companies make initial offers quickly and make them sound reasonable. They are calibrated to close claims before the full picture of an injury is known, not after.
The weeks after a rear-end collision have a way of expanding into something much larger than the moment of impact suggested. The decisions you make in the first 48 hours, whether you go to the doctor, whether you document the scene, whether you talk to the other driver’s insurance company before you understand your rights, shape what options you have later. The person on the other end of the phone from that insurance company has handled thousands of these claims. You are handling this one, probably for the first time, while you are hurt and overwhelmed. That asymmetry is real, and knowing it exists is the first step toward not letting it work against you.
This article is intended for general informational purposes only and does not constitute legal advice. Every accident is different, and the information here may not apply to your specific situation. If you have been injured in a rear-end collision, you should consult with a licensed personal injury attorney in your state to understand your rights and options.