Probably not, if it was a "standard" drink of one beer, one 8 oz. glass of wine or one shot of liquor. The exception might be a very small person, or someone with with impaired liver function. (Of course, they don't usually stop with one.)
If you give it an hour, you should be safe as houses.
Your ability to drive safely can be impaired by use of certain over-the-counter drugs.
one half....A+
Yes, alcohol-impaired driving is one of America's deadliest crimes. It is a leading cause of traffic accidents, resulting in numerous fatalities and injuries every year. Strict enforcement of alcohol-impaired driving laws and public awareness campaigns are crucial in addressing this issue.
one half....A+
one half....A+
one half
one half....A+
one half
one half
Depends. Statistics differ by country. Generally, the answer is drink driving, because most mental functions are impaired or slowed down. But, again, it depends on country, since different countries have different statistics and laws (ie - It's illegal to drink alcohol completely in the United Arab Emirates).
one third
Yes, even one drink can impair your ability to drive safely by affecting your coordination, reaction time, and judgment. It's safest to avoid alcohol altogether before driving to ensure you are not impaired.