In the event of a crash, the boxes (also known as eventdatarecorders) record information including speed and steering.
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The Florida Supreme Court upheld the conviction, however, establishing precedent in that state that data gleaned from eventdatarecorders is admissible in court.
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He also said that eventdatarecorders, nicknamed black boxes, are being installed in every 2011 model year Toyota, Lexus and Scion now in production.