« Reply #12 on: January 23, 2010, 06:17:00 PM »
I realise that the stats were 10% of those stopped, but while it could be less as a whole (and, yes, I'd think that to be the case if you counted the percentage of all drivers in a day) - it could also potentially be more, certainly in the evening or the 'morning after'.
Not all motorists over the limit will drive in a way to arouse suspicion. I mentioned ANPR because you can't assume drink drivers will have some reason to trigger it (no tax, insurance, disqualified etc) or wander around, bumping into the kerb and the centre line. The ones that do are easy to spot and I've reported three in my life - two of which led to the car being stopped within minutes. The other saw the car crash into a ditch and the police took 15 minutes to arrive (an ambulance, by contrast, was there in minutes), by which time he'd staggered out, phoned a friend and been picked up to escape the scene! I got the number plate of the car that picked him up, but don't know what happened afterwards.
Also, people who drink drive often drive very short distances - which is why they convince themselves that they'll be fine. And, there aren't enough traffic cars to possibly catch these - which just confirms their suspicions and allows them to continue.
Christmas seems to be the time we all assume everyone who will drink drive will drive - but it will be happening every day. Today, I am certain that a people driving from the pub for lunch, after the football, or at closing, will be over the limit.
I am not sure if the law has in fact change on random tests (which would also apply to drugs), but I'd much prefer to be stopped every now and then to be checked even if I have not set of ANY alarm bells with an ANPR camera or police car.