Since the term "EDR" can be used to cover many different types of devices, we believe it is important to define the term for purposes of this research site. When we use the term EDR in this site, we are referring to a device installed in a motor vehicle to record technical vehicle and occupant information for a brief period of time (seconds, not minutes) before, during and after a crash. For instance, EDRs may record (1) pre-crash vehicle dynamics and system status, (2) driver inputs, (3) v...