what's the legal blood alcohol level in HK?
In Oz it's 0.05% (memories of Peter Brock's campaign, "under "05" or under arrest").
I tend to agree one drink is ok, however more than one, regardless of the time elapsed since drinking, one's judgement of capabilites to drive is almost caput. Then you have the whole dilemna of people who have no idea what a drink is... how big is a glass of wine, how many standard drinks is *really* in that glass... especially now with wines well over 13% alc. They used to hover around 9-10%. And beers that used to be around 4% are all 5.5%, and in 440ml bottles.
from memory a "standard" drink is 10g of ethanol. that means the average drink is well over this, which basically means one drink will put you at or very close to the limit. have 2, and you're out.
I reckon i can't judge enough to safely on a road i don't know even after 1 drink. but that's just me
Edit: just an add-on - i think in oz they say a bloke can have 2 drinks in one hour, then one drink every hour, and that will keep you AT the limit. For a woman (sorry, this is what they used to tell us in the road users guide!) it's one drink and one every hour. so if u have a half pint of a modern 5% beer an hour, you're well and truly over. As most people hasve problems with maths and guesstimates even when sober, how the hell can we judge after a few drinks?