A crash-data "black box" in a vehicle.

An event data recorder, often called an EDR, is a device built into many cars and trucks that captures technical information right before, during, and sometimes right after a crash or other sudden event. Depending on the vehicle, it may log speed, braking, steering input, throttle position, seat belt use, airbag deployment, and how hard the vehicle changed direction or speed. It usually does not work like a dashcam and typically does not store continuous video or long stretches of driving history; it preserves a short slice of data tied to a triggering event.

That data can matter a great deal in an injury claim because it may support or challenge statements about what happened. In a trucking case, EDR information can help show whether a driver braked late, was traveling too fast for conditions, or lost control in high winds on open Nebraska highways like I-80. It can also be compared with driver logs, maintenance records, and other electronic evidence.

The catch is that this information can be lost, overwritten, or never downloaded unless someone moves quickly. A lawyer may send a spoliation letter demanding the vehicle and its data be preserved. In Nebraska, most personal injury claims have a 4-year deadline under Neb. Rev. Stat. § 25-207, but waiting that long to secure EDR data is usually a bad idea; the claim may still be alive while the evidence quietly disappears.