I guess this is an old article but the statistics were interesting.
A rental car company in the UK (Carrentals) surveyed 700 drivers over 18 years old. Some key stats:
Have caused at least one car accident:
57% of men
44% of women
Among the elderly (over 66 years old)
60% of men
30% of women
have experienced a car accident at least once.
Men have received twice as much penalty points for traffic violations as women.
Almost 50% of men
15% of women
have violated traffic laws, e.g. speeding or running a red light
It's true that these statistics don't necessarily tell us that women are better drivers. It could simply be that men are more risk-taking when driving.