A national survey by the National Highway Traffic Safety
Administration (NHTSA), found that in 2007, approximately one in
eight weekend, nighttime drivers tested positive for illicit
drugs, and according to the 2010 National Survey on Drug Use and
Health (NSDUH), an estimated 10.6 million people aged 12 or
older reported driving under the influence of illicit drugs in
the past year. Even more daunting is the fact that one in three
drivers killed in motor vehicle crashes in 2009 tested for
drugs, tested positive. The results are not common only among
adults. Among high school seniors in 2008, one in 10 reported
that in the two weeks prior to their interview, they had driven
a vehicle after smoking marijuana. Motor vehicle crashes were
the leading cause of death for 15 to 19-year-olds in 2007, and
according to the 2009 NSDUH report, more than six percent of 16
or 17-year olds and nearly 17 percent of 18 to 20 year-olds
reported driving under the influence of alcohol in the past
year. In a comprehensive study on