Just my take on it of course, but the drivers who cause the most pain are statistically way over .05 (the current limit) already.
They are also way over the last limit of .08
In fact, they probably would blow over the .10 limit mentioned in NY.
Lowering the limit really only affects those of us who are already law abiding. It DOES NOT change the road toll IMO. The road toll is shocking, even though the BAL has been dropped to lower levels.
The bastards who drive while pissed to the eyeballs will continue to do so, regardless of the limit that is set. They are the ones the coppers & the govt should be chasing!