I think her point is...
If a 90 y.o. was stopped and could not perform the "tests" better than a 40 y.o. with a BAC of 0.10, why is the 40 y.o. thrown in jail, and the 90 y.o. allowed to drive home?
Is the point arresting "drunk" drivers or anyone that is impaired for whatever reason, since they are similiar risks on the road?
BINGO!!!!!
I'm a perfect example - I need to wear corrective lenses when driving, particularly at night. There is either something wrong with the current prescription I have or my eyesight has changed, but I need to see the eye doctor before I will even consider driving at night again because I know that I could be a menace on the road.
I have an appointment 2 weeks from today and I can guarantee that I will not be doing any driving at night between now and then.
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(note to anti-smoker lurkers, needed glasses long before I started smoking, so don't bother claiming crapola on other websites)
Take it up with your state law makers.