Event data recorders (EDRs) (also known as "black boxes" or "sensing and diagnostic modules") capture information, such as the speed of a vehicle and the use of a safety belt, in the event of a collision to help understand how the vehicle's systems performed. Most car manufacturers currently install these devices in new vehicles.
In December 2015, the federal Driver Privacy Act of 2015 was enacted. It places limitations on data retrieval from EDRs and provides that information collected belongs to the owner or lessee of the vehicle.
This website lists the state statutes relating to event data recorders and privacy. Among other provisions, these states provide that data collected from a motor vehicle event data recorder may only be downloaded with the consent of the vehicle owner or policyholder, with certain exceptions.