A careful record made after an accident can help preserve facts that may otherwise disappear. Photographs, witness information, medical records, vehicle damage, and a clear timeline can all help explain what happened and how the injuries developed.
What should happen first after an accident?
Safety and medical needs come before evidence. Move away from traffic or other hazards if it is safe to do so, call emergency services when anyone may be injured, and follow instructions from law enforcement or medical personnel.
Missouri law generally requires a driver to report a crash to the appropriate authorities when someone is injured or killed, or when property damage appears to exceed $500. The law also addresses reporting certain accidents to the Missouri Department of Revenue within 30 days. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=300.110&utm_source=openai))
Do not delay emergency treatment to take photographs. If a person cannot safely document the scene, a passenger, relative, or other trusted person may be able to preserve information later.
What photographs and videos are most useful?
Take photographs from several distances rather than relying on a few close-ups. A useful record typically shows both the overall setting and specific details.
If it is safe, document:
- The position of the vehicles before they are moved
- Damage to every involved vehicle, including areas that appear minor
- License plates and identifying vehicle information
- Road signs, lane markings, traffic signals, and nearby intersections
- Skid marks, fluid spills, debris, tire marks, and damaged fixed objects
- Weather, lighting, visibility, standing water, ice, snow, or mud
- Obstructions such as brush, parked vehicles, construction materials, or poorly visible signs
- Interior damage, deployed airbags, broken glass, and damaged seat belts
- Visible injuries, if the injured person agrees and the photographs can be taken respectfully
Scene evidence can change quickly. Vehicles may be towed, debris may be removed, road conditions may improve, and temporary hazards may disappear. Federal crash-investigation materials identify items such as skid marks, fluid spills, struck objects, vehicle damage, and injury information as relevant parts of crash documentation. ([nhtsa.gov](https://www.nhtsa.gov/crash-data-systems/crash-investigation-sampling-system?utm_source=openai))
Avoid standing in traffic or entering a dangerous roadway for a photograph. A blurry or incomplete photograph is preferable to risking another injury.
How should witness information be collected?
Ask witnesses for their names and reliable contact information. If they are willing, write down a short summary of what they observed while the memory is fresh.
Useful questions include:
- Where were you standing or driving?
- What did you see immediately before the collision?
- Did you hear a horn, tire squeal, or impact?
- What were the traffic, weather, and lighting conditions?
- Did you see either vehicle move after the collision?
- Did you speak with anyone at the scene?
Keep the witness’s words separate from personal assumptions. For example, “witness said the vehicle entered the intersection on a red light” is different from stating as a proven fact that the light was red.
Witness observations can help corroborate physical evidence and may also help clarify what occurred immediately before, during, and after a crash. ([nhtsa.gov](https://www.nhtsa.gov/research-data/event-data-recorder?utm_source=openai))
What information should be exchanged with the other driver?
Exchange basic identifying and insurance information, but keep the conversation focused and calm. Record:
- Full name and contact information
- Driver’s license information
- Insurance company and policy information
- Vehicle make, model, color, and license plate
- Names and contact information for passengers
- Names or identifying information for vehicle owners when different from the drivers
Do not argue about fault at the scene. Do not guess about speed, distance, medical conditions, or the extent of an injury. A person may feel relatively well immediately after a crash and develop pain, stiffness, dizziness, or other symptoms later.

If the other driver refuses to provide information, do not attempt to force the issue. Give the information to law enforcement and record what happened.
How can medical evidence be preserved?
Seek medical evaluation for significant pain, visible injury, head impact, loss of consciousness, breathing problems, numbness, weakness, or symptoms that worsen. Keep copies of medical records, discharge papers, prescriptions, bills, imaging reports, and follow-up instructions.
Create a simple symptom log with:
- The date and time symptoms began
- The location and severity of pain
- Any restrictions on walking, driving, lifting, sleeping, or working
- Medication taken and its effect
- Missed work, school, household responsibilities, or planned activities
- Follow-up appointments and recommendations
Be accurate and consistent. Do not exaggerate symptoms, but do not minimize them because they were not obvious at the scene. Medical records made near the time of an injury may provide an organized record of the condition, treatment, and progression of symptoms. Missouri law recognizes circumstances under which regularly kept records made near the time of an event may qualify as evidence. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=490.680&utm_source=openai))
What should happen to the damaged vehicle and personal property?
Photograph damage before repairs, cleaning, or disposal. Keep damaged clothing, helmets, child safety equipment, glasses, shoes, and other potentially relevant items in their post-accident condition when practical.
Do not authorize destruction or disposal of a severely damaged vehicle before considering whether it may need to be inspected. A vehicle may contain evidence about the direction of impact, seat-belt use, airbag deployment, mechanical condition, and the location of the occupants. NHTSA crash investigations may include vehicle photographs, measurements, safety-system documentation, and access to vehicles at tow yards or repair facilities. ([nhtsa.gov](https://www.nhtsa.gov/crash-data-systems/crash-investigation-sampling-system?utm_source=openai))
Keep repair estimates, towing invoices, storage charges, rental-car records, and receipts for replacement items. Save digital copies in more than one location.
How should digital evidence be handled?
Preserve original photographs and videos rather than editing them. Keep the original files with their date and time information when available. Save copies of dashcam footage, doorbell-camera recordings, nearby surveillance, text messages, and relevant call records.
If a camera may have captured the event, identify its approximate location and the person or organization controlling it. Many systems automatically overwrite recordings after a short period, so noting the camera promptly can matter.
Do not alter, delete, or publicly edit potentially relevant posts, messages, or videos. Avoid posting detailed opinions about fault or the injuries online. A public statement may be misunderstood when separated from the surrounding facts.
Modern vehicles may also contain event data recorder information. NHTSA describes this information as part of crash investigation and reconstruction, although access and interpretation may depend on the vehicle, ownership, privacy rules, and the circumstances of the investigation. ([nhtsa.gov](https://www.nhtsa.gov/research-data/event-data-recorder?utm_source=openai))
How can a local accident file be obtained?
An involved person, the person’s attorney or insurer, and certain family members or representatives may request a complete, unaltered incident report from the law enforcement agency that maintains it. Missouri law provides a process for requesting accident and incident records for investigation of a civil claim or defense. ([revisor.mo.gov](https://www.revisor.mo.gov/main/OneSection.aspx?section=610.100&utm_source=openai))
Keep the report number, responding agency, date of the accident, and names of involved parties. The report is useful, but it may not contain every photograph, witness statement, video, medical record, or later-discovered fact.
For accidents occurring during winter weather or on rural roads, record changing conditions as soon as possible. In the local community, frost, wet leaves, snow, ice, standing water, reduced daylight, and uneven road shoulders may affect what can be seen at the scene. Conditions that appear ordinary later may have been materially different at the time of the accident.
Sources and legal limits
Evidence gathering should not interfere with emergency care, police work, or anyone’s safety. It also should not involve trespassing, secretly accessing another person’s device, or attempting to obtain protected records without authorization. This article provides general educational information, not a legal opinion about any particular accident.