What evidence should I save after a car accident?

The short answer

The strongest accident file is not the biggest pile. It is one dated record connecting the scene, vehicles, people, insurance, medical care, work, expenses, and communications. Keep originals unchanged, label estimates, and write down what is missing. A licensed attorney can then see both the facts and the gaps.

If anyone needs urgent medical help, call 911. Evidence collection comes after safety.

Use seven folders and one timeline

Create folders named:

1. Scene. Photos, videos, weather, lighting, road markings, signals, debris, and cameras.
2. Vehicles and objects. Every side, damage, plate, VIN if available, tow, storage, repair, and damaged personal items.
3. People. Drivers, passengers, witnesses, responders, owners, and employers.
4. Reports. Police, incident, crash exchange, ambulance, and any later correction request.
5. Medical. Providers, visit notes, bills, imaging, prescriptions, referrals, and work restrictions.
6. Insurance and communications. Cards, declarations pages, policies, claim numbers, letters, emails, texts, portal messages, and call notes.
7. Work and costs. Pay records, schedules, employer notes, repair, rental, travel, medication, equipment, and other receipts.

Then create one timeline that points to the file in each folder. Do not paste private records into a public URL or shared spreadsheet.

Preserve originals and explain copies

Keep the original photo, video, message export, PDF, and document. Make a copy if you want to crop, highlight, translate, or add notes. Label the copy.

For physical objects, photograph them, record where they are, and avoid repair, cleaning, sale, or disposal before a reviewer knows about them. For video sources, identify the owner and camera location even if you cannot obtain the footage yourself.

Tie official records to the same event

Save the crash number, agency, officer name if known, date requested, and date received. State and local government directories lead to the offices responsible for crash records.¹²

If a report is missing or seems wrong, keep it unchanged and write a separate list of questions. Do not edit the official file.

Connect care without diagnosing yourself

List each symptom in ordinary words, when you first noticed it, when you first told someone, and every provider who addressed it. Patients can request copies of medical and billing records.³

Use the treating provider’s diagnosis when one exists. Do not add a medical label or causal conclusion that no provider gave.

Read the insurance paper trail

Save every insurance card, declarations page, full policy, adjuster’s identity, claim number, request, statement, offer, release, and denial. The declarations page and policy do different jobs, and state law affects the coverage question.⁴

What a case check asks

Expect questions about what happened, where and when, injuries and care, vehicles and people, insurance contacts, evidence already held, and important things that may disappear.

Start with what you have. A clearly named missing item is more useful than a guessed answer or an altered document.

Use the private checklist on this site

The evidence checklist runs in your browser. Nothing you check there is sent or stored. Use it to make a working list, then start a case check only if you choose to send information for review.