You may have seen the footage last week of an 84-year-old woman speeding the wrong way down an interstate near Philadelphia.
Although no one was seriously injured, she caused four accidents, and sparked a new debate on whether some seniors should be stopped from driving.
"Has there been recent crashes, recent tickets, has there been a major change in seeing, thinking, moving? All of those are red flags that should make the person seek formal assessment of their driving skills," says Elizabeth Dugan, author of "The Driving Dilemma."
Statistics show, drivers 65 and older are 16 percent more likely to cause an accident than drivers between ages 25-64.