Car accident checklist: what to capture at the scene, step by step.

Critical evidence disappears fast after a crash: vehicles are towed within hours, skid marks fade, witnesses scatter, and shock clouds memory. This checklist walks you through exactly what to document at the scene, step by step, so that you have a clear record of the facts when you need it later. Use it at the scene, or read it now so it is familiar when you need it. This checklist covers the scene itself; for everything that comes after — health, reporting, repairs — see our step-by-step guide to what to do after a car accident.

Photograph the scene and vehicle damage

Before anything moves, take photos. Your smartphone or camera timestamps them automatically, which creates a permanent record of when each photo was taken. That timestamp protects against later disputes about whether the photos were taken at the scene or days afterward. Thorough damage photos also matter months later: they are core documentation if you pursue a diminished value claim once repairs are done.

Capture these angles and details:

• Overall scene: a wide shot of both vehicles in their resting positions, showing the road layout, lane markings, and relative positions.
• Each vehicle: front, rear, and sides from multiple angles, showing all visible damage.
• Road markings: lane lines, crosswalks, stop lines, and arrows painted on the pavement.
• Lighting and visibility: daylight, dusk, or nighttime lighting (street lights, headlights, brake lights), and shadowing.
• Weather and road surface: dry or wet pavement, snow, gravel, debris, glass, or fluid spills.
• Traffic control: signals, stop signs, and yield signs, with their state (red, green, yellow) if visible.
• Point of impact: where the vehicles made contact, gouge marks, paint transfer, and broken glass.
• Debris field: scattered parts, glass, or objects that show where the collision occurred.

The timestamp and location data embedded in smartphone photos provide documentation that a neutral third party (the device) recorded these facts at a specific moment.

Collect the other driver's information

Ask the other driver for these details and write them down or type them into your phone:

• Full name, phone number, and home address.
• Driver license number and state.
• Insurance company name and policy number.
• License plate number, and the vehicle make, model, year, and color.
• Vehicle identification number (VIN), usually on the driver's-side dashboard or door jamb.

Stick to facts when talking with the other driver. Do not admit fault, assign blame, or make statements about injuries. Simply exchange information in a neutral, calm tone. If police arrive, let them lead; you can give your account of what happened.

Get witness contact information before they leave

Bystanders and other motorists who saw the crash are already leaving. Ask anyone who witnessed it for their name and phone number, and write it down. You can say something simple: "Did you see what happened? Would you be willing to share your name and number in case questions come up later?"

If a witness is willing, note what they saw in their own words along with their name and phone number; an independent account captured while it is fresh is valuable because witnesses have no stake in the outcome and memories fade quickly. If they would rather not give an account, at least get their contact information so you can follow up. Also photograph any nearby business signs (stores, gas stations, restaurants); they often have security cameras and may keep footage for 30 days or longer.

Document road and environmental conditions

Write down or photograph these details about the scene. This context helps explain how the crash occurred:

• Time and lighting: morning, afternoon, evening, or night; bright sun, overcast, dusk, or dark (street lights on or off, working or broken).
• Weather and road surface: clear, rain, snow, fog, or ice; dry asphalt, wet, gravel, potholes, or a slanted surface.
• Visibility: whether sight lines were open or blocked by hills, buildings, parked cars, or trees.
• Traffic control and markings: signal color at the time of the crash (if applicable), stop or yield signs, posted speed limit, and lane markings (single or double yellow, dashed, solid; faded or clear).
• Position and traffic: at or near an intersection, on a straightaway, curve, or incline; light, moderate, or heavy traffic.

These details describe the driving conditions at that exact moment. Police and investigators use this context to understand what happened.

Understand your reporting requirements

Most U.S. states require a police report for crashes that cause injury, death, or property damage above a set dollar threshold (often $500 to $1,500, varying by state). California requires a report for damage over $1,000, and New York requires one for damage over $1,000 as well. Check your state's DMV website for your specific requirements.

If a report is required, you typically have 10 to 30 days to file it, depending on your state. You can often submit it online, by mail, or in person. Provide straightforward facts: date, time, location, vehicles involved, and what happened as you experienced it. If police responded to the scene, ask the officer for the case or report number and their badge number so you can find the official report later.

If you might need medical attention

If you have any pain, dizziness, nausea, headache, or neck or back symptoms at the scene or in the hours and days afterward, see a doctor. Some injuries, such as soft-tissue damage or concussion, do not show up immediately, and adrenaline can mask pain. A medical evaluation matters for your health, and it also records your condition at the time of the accident.

This is about your wellbeing, not building a claim. Seek care because your health matters; the medical record simply documents what you experienced so your doctor can treat you appropriately.

Frequently asked questions