Hopefully some of the tax revenue is going into research on marijuana as well, if we hadn&#x27;t basically banned research on this substance for so long we&#x27;d have more data. However, can&#x27;t the officer give a field sobriety test if they suspect the citizen is high? What would they do if someone took too many xanax or went on a drive while on ambien?<p>While I understand why a &quot;highness-measuring&quot; device would be nice, I think this underlies a sore point in our policing and governing. It&#x27;s not enough for the officer to make a judgement on whether the citizen is too impaired to drive, we must have a quantitative measurement. I think both a subjective judgement and any one quantitative measurement can overlook a ton of factors, but one is better at negating legal repercussions.