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Today's Terms
Aggressive Drivers (road rage)
Definition:
Can be describes as: aggressive tailgating,Lights flashed at them because the other motorist was annoyed, aggressive or rude gestures,deliberate obstruction -- preventing them from moving their vehicle,verbal abuse,physical assault and other actions.
Tripped Rollovers
Definition:
NHTSA data show that 95% of single-vehicle rollovers are tripped . This happens when a vehicle leaves the roadway and slides sideways, digging its tires into soft soil or striking an object such as a curb or guardrail.
Years of Potential Life Lost (YPLL)
Definition:
Calculated based on the following equation: YPLL = Fixed Age - Age at death. Usually the fixed age is 65 or 70, or the life expectancy of the group in question.
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