> So ultimately I would like a push to improve roadside driving ability testing, regardless of suspected substance use. This covers sleepiness, dehydration, etc

> So ultimately I would like a push to improve roadside driving ability testing, regardless of suspected substance use. This covers sleepiness, dehydration, etc. I definitely agree with you there. The difficulty is making it sufficiently objective. A cop has every incentive to arrest you, so we need to have a degree of empiricism to the test so that cops can't use it to arrest anyone they want.