The point I went to an extreme to make here is, there is nothing more you can do as far as penalties, when the death penalty did not do the job. Sure they may get tired of being arrested, and having their vehicle impounded and or seized, and spending time in jail, if their habitual. However a person who has not been through all that, will not necessarily be deterred by it.
If it's long enough in jail, let's say a year, or five, that's five years they CAN'T drive. I hear you, there'll always be those that will keep doing it until they off themselves by driving off a bridge while wasted, hopefully not taking anyone else with them.
This is the part I have trouble with, being over the limit should not be the threshold, being impaired should be. The limit is too arbitrary, (especially .04, or what comes next .0001). They don't use limits with drugs, and they have not problem nailing someone who is impaired while driving after using them. This is what the sobriety tests are for. They prove that you have reached the point that you should not drive because the substance has affected your judgment.
OK, I agree there. I learned in undergrad that your performance is actually improved after your first drink or two!! This quickly deteriorates though.....
"Impaired" is not quantifiable. Walking a line, touching your nose, etc are not tests that will readily hold up in court. I know the officers opinion and testimony contributes to that, but that introduces sources of bias, which any reasonable court shouldn't allow. H***, even the undeniable evidence of a BAC test often don't hold up.
In Canada, RARELY is an impaired given for being stoned. Is that different in the USA?? It's not right, but it's the case. There is no easy, readily available measure of Cocaine, Marijuana, etc that is quantifiable. They are yes/no tests, and the yes could mean they had it 1 hour ago, or 1 month ago. That's different for each drug.
In an ideal world, your ideas would fly, but until then, let's just all keep our heads about us and live within the strict DUI laws and stay alive and don't be 'that guy' that only had 3 or 4 wobblies and orphaned a family.
-Jer.