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Triangulation
Technique for scene documentation where items of evidence are located by measuring the distance between two (2) reference points.
Elderly & Older Drivers
Drivers typically 65 or 70 years old, most states require renewal applicants to appear in person and to pass a vision test.
Momentum
The mass of an object multiplied by its velocity. It is a vectored quantity with both magnitude and direction.
Affidavit
A written or printed declaration or statement under oath Affirm - The assertion of an appellate court that the judgment of the lower court is correct and should stand.
Aggressive Drivers (road rage)
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.
Years of Potential Life Lost (YPLL)
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.
Subpoena
Document issued by the authority of the court to compel a witness to appear and give testimony or produce documentary evidence in a proceeding. Failure to appear or produce is punishable by contempt of court.
Linear Momentum
A quantity associated with the motion of an object along a straight path. The linear momentum of an object is defined to be equal to its mass times its velocity.
Blood alcohol testing
At all levels of blood alcohol concentration, the risk of being involved in a crash is greater for young people than it is for older people (Mayhew 1986). In 2001, 25% of drivers ages 15 to 20 who died in motor vehicle crashes had been drinking alcohol (NHTSA 2002b).
Reaction Time
The motorist who is not alert cannot cope with a sudden emergency as quickly as is necessary. An overly relaxed driver requires more time to react to an emergency than does an alert one.
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