""I think the ultimate aim should be to change the mindset of society toward more responsible behavior, and I don't think that those immobilizing devices achieve that goal.""

I heartily agree with the first half of that. In an ideal world education would be the way forward. However I emphatically disagree with the contention that tightening limits will be more successful.

As I said above, all the evidence is that the majority of the target group will, as they do now, ignore those limits.

Even after being caught, fined, and banned, they will tend to repeat the offence.

In the final analysis, it may be necessary to have BTIs fitted , by law, to new vehicles. You can't drink and drive if your car refuses to start, and let's face it, the majority of car owners these days wouldn't have a clue how to disable them.

Don T.