What to Do After a Semi-Truck Accident: A Step-by-Step Guide

A collision with a commercial truck is not like a car crash. The other side has a rapid-response team in motion within hours, and what you do in the first three days often decides the case. This guide walks through the practical steps from the moment of impact through the first week.

At the scene

If you can safely move, do these things in order — then nothing else until paramedics arrive.

• Call 911 and request both police and EMS, even if you feel "okay."
• Take photos of every vehicle, license plate, DOT/MC number on the truck cab and trailer, the driver's commercial license, and the scene from multiple angles.
• Get the names and phone numbers of every witness — police often miss them.
• Do NOT discuss fault, apologize, or estimate speed. Anything you say is admissible.
• Refuse on-scene medical waivers. Many serious truck injuries (internal bleeding, traumatic brain injury, spinal compression) do not present symptoms for 24–48 hours.

Within 24 hours

The trucking company's insurer is already moving. Federal regulation (49 CFR §390.15) requires them to investigate, and most large carriers have a "rapid response" team — investigators, defense lawyers, even accident reconstructionists — at the scene within hours.

• Get a full medical workup at a hospital, not urgent care. Document everything.
• Do not give a recorded statement to ANY insurance company — including your own — before talking to a lawyer.
• Preserve the clothes, shoes, and personal items you were wearing.
• Photograph your visible injuries every day for at least two weeks.

Within 7 days

This is when evidence starts disappearing. Trucks return to service. ELD logs get overwritten on a rolling cycle (typically 6 months, but data is regularly lost in routine carrier audits). Black-box (ECM) data may be reset.

• Have an attorney send a spoliation letter to the carrier — a written demand to preserve the ELD logs, ECM data, driver qualification file, post-crash drug/alcohol tests, dashcam footage, and maintenance records.
• Identify the carrier's DOT number and pull their FMCSA SAFER profile (free at safer.fmcsa.dot.gov) to see prior violations.
• Begin a daily injury journal — pain levels, missed activities, sleep disruption, lost work.

Why this matters

Truck cases are won and lost on evidence preservation. The single most common reason claims undervalue or fail is delay: the victim waits two weeks to call a lawyer, and by then the ELD logs are gone, the truck has been repaired, and the carrier's investigators have a head start on the narrative.