An Event data recorders (EDR, or black box) is an electronic sensor that records specific characteristics of an automobile moments before and during a collision. As of 2014, they can be found on 90% of all new cars and light trucks. For those with EDR installed, NHTSA requires a minimum of 15 data points to be recorded by all EDR (including speed, steering, braking, acceleration, seatbelt use, and force of impact (of a crash) and whether airbags deployed), though, additional and more detailed information may also be recorded typically up to 5 seconds before a crash. Officers should note that access to these data are protected by state law and often require a search warrant or owner’s consent.
- Examples: EDR are found in most modern automobiles and light trucks
- Technologies: Custom sensors and storage
- More information: See http://fas.org/sgp/crs/misc/R43651.pdf, http://abcnews.go.com/Technology/MellodyHobson/car-black-box-records-key-data/story?id=9814181, and http://www.edmunds.com/car-technology/car-black-box-recorders-capture-crash-data.html.
