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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.
Risk assessment
The determination of the probability of failure of a component or system.
Tailgating
Folowing too close to another car, not alowing space for you to brake or car in front to brake. The operation of a motor vehicle in a manner that endangers or is likely to endanger persons or property
Common law
Law which derives its authority solely from usage and customs of immemorial antiquity or from the judgments and decrees of courts. also called "case law."
Brake failure
Brake failure can happen. Drum brakes are more commen to fail. Modern dual-circuit brake systems have made total brake failure an unlikely event. If one side of the circuit fails, the other side is usually sufficient to stop a vehicle.
Tripped Rollovers
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.
Soft Tissue Injury
Injuries sustained to the muscle, skin, connective tissue.
Failure to yield the right of way
Can be when you proceed forward while disregarding right of way signs or signals for other cars. You may not be the car that is sopossed to go forward.
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).
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.
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