In California it is a crime to drive while impaired in any way that affects your mental or physical faculties, the impairment can be slight. In contrast, the state also criminalizes being drunk in public, however the level of impairment required for a conviction is much greater. For example, if the suspect in a public intoxication case were to fail the so-called Field Sobriety Tests given to suspected DUI drivers that would not necessarily equate to being impaired to the degree required...