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COPYRIGHT 2005 Ehlert Publishing Group
Do you own a late-model Ford or GM vehicle, Toyota or Lexus? If so, you may want to take a look under its carpet. According to an eyebrow-raising story by Bob Gritzinger in the November 8, 2004 edition of AutoWeek, what began in the 1970s as fairly simple devices designed to record post-crash airbag performance have evolved into sophisticated electronic data recorders, little silver boxes capable of capturing both pre- and post-crash data. Recording begins when the EDR detects a significant change in velocity, indicating a crash and airbag deployment may be imminent, and ends once the crash occurs. The data saved from the incident can be downloaded and may include vehicle speed, throttle position, brake status, seatbelt status, the severity of the crash (as measured by a change in velocity over time) and airbag deployment. Armed with this data, a crash investigator has an electronic witness to what the driver and car were doing and how they reacted...
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