Contrary to conventional wisdom, older drivers as a group pose less risk to other road users than just about anyone.  Older drivers are more likely to have functional limitations, or may require medications that negatively impact safe driving, and yet many recognize their limitations and self-regulate their driving.  In 2005, people 65 and older accounted for about 15 percent of all licensed drivers in the United States but comprised only about 7 percent of all drivers involved in police-reported crashes. However, while seniors are involved in fewer crashes, their fatality rates are on par with those of teenagers, because older drivers are more likely to be seriously injured or killed in even a low- to moderate-severity crash.