FlexibleResponse
There is no accurate way of predicticing you can drive either, but no one moans on here about that.
The same responsibility rests with those now affected by the new law as drinking and driving legislation, the gartenteed way of being under the limit is not to drink. I don't before I drive, I don't see that as a restriction on my life, just common sense. If I do drink, 5 units one evening then I stay away from the car till the next evening.
Yes there are breath test devices which will mesure the limit in this new law, you quoted someone else who mentioned that Sweeden has the same limit. They manage with electronic screening.
At the end of the day the choice is yours, either drink, and not work or work and don't drink.
Oh, and engineers are able to be 4 times more p****d than pilots. No one said that anyone at the prescribed levels is p****d, just that they may be impairered.