I seem to remember hearing the same about drivers. Might have been for my country (Germany) specifically, where the minimum age for a license 18. If you get your license at 16, you're still in the upwards swing on risk-taking behaviour, which might drown out all other statistical signals.
Yes, the most dangerous drivers tend not to be the ones who just got their license, as they usually still adapt and don't drive too fast. It becomes dangerous after a few months or 1-2 years when a driver feels confident enough even though he still has very little experience.
