There is no question that a person who is under the influence of intoxicating liquor or drugs cannot safely operate a motor vehicle. The National Highway Traffic Safety Administration (NHTSA) has performed extensive research and testing beginning mostly in the 1970s, and after decades of work, they have a fairly accurate idea of the physical and mental effects alcohol has on the human body.
For example, at certain levels of intoxication, a person will have blurred or double vision, difficulty concentrating, loss of motor control, poor decision-making, and many other symptoms. When a person has enough alcohol in his or her bloodstream, there will be a loss of major functions and death can result. However, while a person may be experiencing the effects of intoxication, they will generally lack the mental capacity to fully appreciate these effects due to the alcohol. Continue reading