A link to a commentary on the ADHD-Europe website  a new meta-analysis on the risk of driving with ADHD, which is not as nearly  high as we have been told-

The relative risk of driving with ADHD has been greatly exaggerated: The Woozle Effect and its consequences on drivers with ADHD

Vaa, Truls - ADHD and relative risk of accidents in road traffic: A meta-analysis. Accident Analysis &  Prevention-

http://www.sciencedirect.com/science/article/pii/S0001457513004004