Dr. Declan Bedford:

There have been such situations. I have looked at more than 900 results for people killed in car crashes. I have looked at the Garda files and the post mortem results and a good proportion of people had both. The biggest by far, however, was alcohol. Alcohol was way out there on its own, mainly in men rather than in women, unfortunately, especially younger men. That is the way it is. Drugs have become more common in the world in the last few years, however.