They were saying on QR77 the other day that of all traffic accidents only 2% of them involved drivers with BAC of .05 - .08%, the other 98% are either sober or drunk. They also said that the conviction would remain on your record for 10 years. So the roadside judgements will probably jack up your insurance rates too.
Edit: Looks like
GP_Matt already posted the stats 3 pages back.
http://forum.calgarypuck.com/showpos...&postcount=392