Driving offences impact upon everyday Canadians more than any other category of criminal offence. One drink too many, an error in judgment or momentary inattention can result in disastrous consequences and a criminal prosecution.

Patrick Fagan has secured verdicts of not guilty for hundreds of persons charged with impaired driving, over .08 and refusing to blow. He has also secured not guilty verdicts for persons charged with impaired driving and criminal negligence causing bodily harm and death. Some of these cases have been fought before Judges sitting alone and others before Juries. Examples of success in high profile cases of this nature are provided to the right.

In 2005 Patrick Fagan sold his proprietary interest in the Calgary Impaired Driving Office but continues to defend prosecutions for impaired driving, over .08 and refusing to blow.