It should be noted that in the case of FL v. John Walker, Ft. Myers, FL, Jan. 2003, Walker was acquitted by a jury of two counts of vehicular manslaughter. The "black box" evidence contradicted the testimony of the state's accident reconstruction expert. The prosecution held that Walker was driving in excess of 80 mph in a 60 mph zone but the data recorder revealed a speed of 52 mph at impact.
In this case, the data recorder evidence was in the favor of the defendant. Without this evidence, a conviction was very likely.
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It should be noted that in the case of FL v. John Walker, Ft. Myers, FL, Jan. 2003, Walker was acquitted by a jury of two counts of vehicular manslaughter. The "black box" evidence contradicted the testimony of the state's accident reconstruction expert. The prosecution held that Walker was driving in excess of 80 mph in a 60 mph zone but the data recorder revealed a speed of 52 mph at impact. In this case, the data recorder evidence was in the favor of the defendant. Without this evidence, a conviction was very likely.