A VDR or EDR is a device installed in vehicles that records technical vehicle and occupant information for a brief period before, during, and after a crash.

EDRs typically record information such as vehicle speed, throttle position, brake status, seatbelt usage, airbag deployment, and other pre-crash and crash data.

EDR data is retrieved using specialized tools and software designed by the vehicle manufacturer or third-party vendors. This process is typically performed by trained professionals.

Yes, EDR data is considered highly reliable and accurate. It provides objective and precise information about the vehicle's status and performance before, during, and after a crash.

Yes, EDR data can be used as evidence in legal proceedings to help determine the circumstances of a crash, including factors such as speed, braking, and seatbelt usage.

EDR data helps accident investigators reconstruct the events leading up to a crash, identify the causes, and understand the dynamics involved. This information can lead to better vehicle safety standards and regulations.

EDRs are designed to be tamper-resistant, and the data they record is typically secured to prevent unauthorized modifications. However, it is crucial to ensure that data retrieval is conducted by certified professionals to maintain integrity.