<<As it stands, the 0.2promille limit prevents one from having even just one or two beers - (we are not talking about 10...) or glasses of wine with dinner the evening before, without putting one's licence and career at risk.>>
Not sure about this?
"Old Language" I appreciate, but
1 Pint = 2 units
1 Glass of Wine = 1 Unit
UK Drink Drive Limit about 5 units.
Body expends ~1 unit / hour.
So given no drinking in 8 hours prior report, in theory you could have 8 units (=4 Pints), and still be clear under any ruling i.e. nothing left from the beers. What's there due to other factors seems to be of legitmate concern however...
Add in some safety factor, 2 pints still seems fine... (for blood levels - individual legislation might specify otherwise)
Where has my maths gone wrong??
NoD