Roger wrote:
PeterE wrote:
{snip}
Also the poll doesn't mention the question of penalties. Most Continental countries with a lower limit also have lower penalties, with many not imposing mandatory disqualification until a blood-alcohol level well above 80 mg is reached.
Unlike the progressive speeding fine/points 80110ck5 which they are trying to push through at the moment, drawing still more dangerous attention to the numerical speed, this makes MUCH more sense.
If you look at the risk statistics, you might conclude that it makes sense to set the legal limit at 50 mg, with penalties at that level equivalent to a standard speeding fine, and with a steadily increasing scale above that.
However, I think there is considerable merit in having a single black-and-white standard.
Even in 1967, it was recognised that some drivers might be impaired below 80 mg, but the view was taken that if severe penalties (i.e. a mandatory one-year ban) were going to be imposed on individuals on a strict liability basis, the threshold needed to be set at a level where it was clear that the vast majority of people would be impaired to some extent.
Nobody nowadays gets much, if any, sympathy if convicted of drink-driving. That consensus of opinion would be eroded if we moved to a lower limit and/or a more graduated structure of penalties.
The reason for the Swedish 20 mg limit is that Sweden has a severely anti-alcohol culture, and it is widely perceived that one drink might lead to 20. As very few drivers are impaired at BAC levels below 50 mg, there is no safety justification for setting lower limits - it is essentially a cultural thing.