Part of a post from Ian Tyrrell: By the way,on the Drink Driving controversy, note that New South Wales and some other Australian states have .05 and RANDOM roadside breath tests. Generally, the road toll has been cut significantly in recent years, though other factors such as the level of economic activity and current cmapaigns against speeding are also possible causes. The .05 rule means real changes in how people drink, and I believe it has encouraged either more moderate drinking, or using designated drivers. No doubt Robin Room would know much more about any research, and I speak here merely as an observer. You can post this if you think it useful.