Diane Spitaliere and her pet dog Izzie sit in her car outside her house in Alexandria, Va. More women now have driver’s licenses than men, a reversal of a longtime gender gap behind the wheel that transportation researchers say is likely to have significant safety and economic implications. Spitaliere, 58, a retired government worker says: “I want to be in my own car for as long as possible. I want to be independent for as long as I can.” (AP Photo/Manuel Balce Ceneta, File)

Question: Are you a safer driver than your spouse?