Which data are typically logged by an event data recorder?

• A. Eye color of driver
• B. Speed, braking, acceleration, steering
• C. Music preference
• D. Passenger count

Answer: (B)

Event data recorders are designed to capture vehicle dynamics and driver inputs to help investigators reconstruct what happened during a crash or rapid event. The data typically logged focus on how the vehicle was moving and being controlled: the speed at which it was traveling, how hard braking was applied, the overall acceleration or deceleration, and how the driver turned the steering wheel. These measurements provide a precise picture of the vehicle’s motion and the driver’s actions, which is exactly what’s needed for accurate crash reconstruction. Personal attributes like eye color, music preference, or the number of passengers aren’t related to vehicle dynamics and aren’t recorded by EDRs in standard practice, which is why they aren’t included as typical data.