An event data recorder, is a device installed in some automobiles to record information related to traffic collisions. In the USA, EDRs must meet federal standards, as described within the U.S. Code of Federal Regulations. From Wikipedia
The Chuncheon District Court ruled there was no evidence of a vehicle defect in the 2022 crash that killed 12-year-old Lee Do-hyeon, prompting the family to announce plans for an appeal.